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Showing posts with label CISCO CCNA 2. Show all posts
Showing posts with label CISCO CCNA 2. Show all posts

CISCO CCNA 2 - Practice Final

1
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?

There was a POST failure.

The incorrect IOS loaded.

There was an error in the startup configuration file.

*The configuration register was set to ignore NVRAM.



2
What are the major characteristics of a wide area network? (Choose three.)

*connect devices separated by wide geographical areas

*includes technologies of FDDI and Ethernet

uses serial connections to access bandwidth

*common carriers are needed for connections

type of connection between a router and a switch



3
If the config-register on a router is set to 0x2102, where is the first place the router will look for boot system commands?

RAM

ROM

Flash

*NVRAM



4


Which of the following are valid static IP routes? (Choose three.)

RouterB(config)# ip route 192.168.5.0 255.255.255.0 S1

*RouterC(config)# ip route 192.168.1.0 255.255.255.0 S1

*RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2

RouterB(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.2

*RouterC(config)# ip route 192.168.2.0 255.255.255.0 192.168.4.1

RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.2.1



5


Refer to the network and routing table entries shown in the graphic. What will happen when a packet destined for network 192.66.7.0 is received by Router A?

*It will be forwarded through interface S1.

It will be forwarded to the default route.

It will be directed toward the Internet.

It will be discarded.



6


A network administrator trying to deny Telnet traffic from the 192.5.5.0 network to the 201.100.11.0 network entered the commands shown in the graphic. When monitoring the network, the administrator noticed that Telnet packets were still passing between those networks. What is the cause?

The router ignored this type of traffic because it required a standard access list to be configured instead of an extended one.

The wrong port was configured for the ACL so Telnet traffic was still allowed.

*The access list has not been assigned to an interface.

The permit ip any any allowed all traffic to pass regardless of the other statements listed in this ACL.



7
Which of the following is the correct flow of routines for a router startup?

*load bootstrap, load IOS, apply configuration

load bootstrap, apply configuration, load IOS

load IOS, load bootstrap, apply configuration, check hardware

check hardware, apply configuration, load bootstrap, load IOS



8
Which of the following would cause the "Message Of The Day" banner to appear? (Choose three.)

*telnetting into the router

initiating a debug session

configuring a router for the first time

using the Aux port to check the current configuration

*using the console port to check the current configuration



9
When must a router serial interface be configured with the clock rate command?

*when the interface is functioning as a DTE device

when the interface timers have been cleared

when the connected DTE device is shut down

when the interface is functioning as a DCE device



10


The internetwork needs to communicate between the hosts connected to the E0 interface of the Utah router and hosts connected to the E0 interface of the Idaho router. The hosts should also have connectivity to the Internet. Which commands must be configured in order to enable this communication? (Choose three.)

Idaho(config)# ip route 172.31.1.0 255.255.255.0 172.31.2.1

*Idaho(config)# ip route 0.0.0.0 0.0.0.0 s0

*Idaho(config)# ip route 172.31.2.0 255.255.255.0 172.31.2.2

Utah(config)# ip route 172.31.3.0 255.255.255.0 172.31.2.1

*Utah(config)# ip route 172.31.3.0 255.255.255.0 s1

Utah(config)# ip route 0.0.0.0 0.0.0.0 s0



11


The network shown in the graphic is using RIP as the routing protocol. Which of the following are true regarding the network discovery process that will occur for this network? (Choose three.)

*The Palm Beach router will show networks 192.168.7.0 and 192.168.8.0 as directly connected networks.

All of the routers will have direct knowledge of the exact topology of the entire network.

*The Key West router will forward routing table information to the Miami and Palm Beach routers.

The Miami router will learn about network 192.168.1.0 from the Key West router.

*If network 192.168.4.0 becomes unavailable, the Key West router will notify the other routers of this fact in the next update.



12
Which of the following are necessary for basic network communication to occur between hosts that will run such applications as Telnet, web browsers, and e-mail? (Choose three.)

*TCP/IP must be installed and properly configured on each device.

Multiple subnets must be configured on the router to ensure accurate delivery.

*A default gateway must be configured for datagrams to travel outside of the LAN.

The hosts must be directly connected to a switch to travel outside of the LAN.

*To ensure accurate delivery, a router must be configured and accessible by hosts on the network.



13
When would the ROM monitor mode be used? (Choose two.)

maintaining routing configuration settings

*modifying the IOS image stored in Flash

running a limited IOS feature set

*performing the bootstrap process



14
Why is it useful to have an interface description?

A user can telnet to the router using the interface description.

The interface description is a shortcut way to edit the running-config.

*The interface description helps identify distant network connections.

The interface will remain inactive until an interface description is applied.



15
After issuing the show interfaces command, a technician notices the line "Serial1 is down, line protocol is down" in the output. Which of the following are possible reasons for this message output? (Choose three.)

There is a mismatch in the encapsulation type on both ends of the link.

*A Layer 1 issue exists.

*An interface problem exists.

The clockrate was not set during configuration.

*There is no usable media for the protocol.

Keepalive messages are not being sent.




16
The following line was displayed in the output of the show ip route command.

R 192.168.3.0/24 [120/3] via 192.168.2.2, 00:00:30, Serial0/0

What is the value of the routing metric?

*3

12

20

30

120



17
Which of the following WAN connection services typically use synchronous communications? (Choose two.)

circuit-switched

leased line

packet-switched

*Ethernet

analog modem services



18


Router B received an interface configuration change. Suddenly, it transmits a new update. Which of the following could have triggered this update? (Choose two.)

Router B received a configuration change.

*Router A sent a message requesting an update.

Router C came online after Router B sent the RIP update.

*Router B received an error message indicating the last update was not received.



19


Refer to the above graphic. When using RIP as the routing protocol, how would Chicago use load balancing to route packets to New York? (Choose two.)

*by forwarding packets over paths of equal cost

by forwarding packets according to hop count and speed of the link

*by determining which interface has the least traffic and sending to it first

by first determining the speed of the links and then cycling packets through the fastest links first

by cycling packets through interfaces and routes following the same pattern (Router 1, 2, 3) each time



20


Which command will produce the output shown in the graphic?

show cdp

*show cdp neighbors

show cdp neighbors detail

show cdp detail



21
Which of the following are true regarding the setup configuration mode? (Choose three.)

To abort the setup mode, use the CTRL+SHIFT+6 keys.

To abort the setup mode, use the CTRL+C keys.

*Setup mode allows a complete configuration of the router.

*To enter setup mode, use the privileged mode setup command.

A router that does not find a valid IOS during the boot process will start the system configuration dialog.

*A router that does not find a valid configuration file during the boot process will start the system configuration dialog.



22
Which statement about datagram life is true?

Each router increments the TTL value of the datagram until the maximum hop count of the routing protocol is reached. The packet is then returned to the source.

The packet is dropped when the router count and the TTL value match. The source is notified that transmission has failed.

*Each router decreases the TTL value by one until it reaches zero. The datagram is then discarded and a time exceeded for message is sent to the source.

The destination device discards the datagram if the TTL value is zero on arrival. An ICMP destination unreachable message is sent back to the source.



23


Assume OSPF is being used on all routers. What happens when the link between Router1 and Router2 goes down? (Choose two.)

Updates start broadcasting every 30 seconds.

Updates start broadcasting every 90 seconds.

Link-state advertisements are flooded.

*Link-state advertisements are sent only to neighboring routers.

*All routers note the change and adjust routes.

All routers ignore the change until the route becomes active again.



24
Why would an administrator use the Telnet application when troubleshooting a network? (Choose three.)

*It can be used to verify the operation of application layer software between the source and destination.

Telnet can use the ICMP protocol to verify a hardware connection and network layer address.

*It is the most complete testing mechanism available.

*Remote networks may be accessed via a Telnet session for troubleshooting.

Time to Live values are used by Telnet to identify a failure of device between source and destination.



25
A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.)

*The ip host table on the router is not configured.

The command telnet Boston was issued from the wrong router prompt.

The routing table is missing.

*Domain name services are not available.



26
Which of the following are functions of a router? (Choose three.)

*packet switching

*extension of network segments

segmentation of local area networks

*selection of best path based on a logical addressing

selection of best path based on a physical addressing



27
Which two statements are true about route metrics? (Choose two.)

*The more factors that make up a metric, the greater the flexibility to tailor network operations.

The larger the metric number, the better the path.

Routing protocols use metrics to send routing updates to directly connected neighbors.

Bandwidth and delay are static metrics used by RIP v1.

*Ticks, delay, and cost are metrics used by routing protocols.



28


The administrator knows that port E0 on router B connects to a small LAN without any routers. Which command can be executed on router B to conserve bandwidth on port E0?

no update timers

holdown-timer 96

poison reverse E0

*passive-interface E0

no triggered updates



29
Which of the following are true statements about creating and applying access lists? (Choose three.)

Access list entries should filter in the order from general to specific.

*One access list per port per protocol per direction is permitted.

*Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination.

There is an implicit deny at the end of all access lists.

*Statements are processed sequentially from top to bottom until a match is found.

The inbound keyword refers to traffic entering the network from the router interface where the ACL is applied.



30
What can be determined from the partial output of the show ip route command displayed below? (Choose two.)

R 200.200.200.0/24 [120/1] via 192.168.10.2, 00:00:14, Serial0/0
C 192.168.10.0/24 is directly connected, Serial0/0

*The next update will be in 76 seconds.

*The next update will be in 16 seconds.

The administrative distance is 120 and the metric is 1.

The metric is 120 and the administrative distance is 1.

200.200.200.0 is configured on Serial0/0.

192.168.10.2 is configured on Serial0/0.




31
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?

4

*5

8

10



32
In the configuration register value 0x2104, which value represents the boot field setting?

x

2

1

0

*4



33
Host name resolution allows for the use of an alphanumeric name to identify network devices. Select the answer that displays the correct configuration syntax for creating a host name.

Router# ip host Fontana 200.100.50.5

*Router(config)# ip host Fontana 200.100.50.5

Router(config-if)# ip host Fontana 200.100.50.5

Router(config)# ip host Fontana 200.100.50.5/24



34


Refer to the network graphic. A packet needs to travel from Router F to Router A. Which path would be selected by the RIP routing protocol if the default metrics are used?

F, G, E, D, B, A

F, E, D, C, A

*F, E, D, A

F, E, D, B, A



35
Which of the following will add a TFTP server as a fallback source for a router to load an IOS image?

Router# boot system tftp 163.150.9.31 c2500-d-l.120-9
Router# copy run start

Router# boot system tftp c2500-d-l.120-9.bin 163.150.9.31
Router# copy run start

Router# config t
Router(config)# boot system tftp c2500-d-l.120-9.bin 163.150.9.31
Router(config)# exit
Router# copy run start

*Router# config t
Router(config)# boot system tftp 163.150.9.31 c2500-d-l.120-9.bin
Router(config)# exit
Router# copy run start



36
Which of the following are characteristics of the Open Shortest Path First (OSPF) routing protocol? (Choose two.)

*functions as a link-state routing protocol

discards packets when the hop count is greater than 15

calculates the shortest path to a destination using the Diffused Update Algorithm (DUAL)

created as a proprietary routing protocol

*floods updates as topology changes occur

broadcasts routing updates every 90 seconds or as triggered by topology changes



37


The following access list has been created to prevent traffic from host 204.204.7.122 from accessing the 201.100.11.0 network.

access-list 22 deny host 204.204.7.122
access-list 22 permit any

Which group of commands will properly place this access list so that this host is denied access only to the 201.100.11.0 network?

RouterA(config)# interface s0/0
RouterA(config-if)# ip access-group 22 in

RouterA(config)# interface s0/0
RouterA(config-if)# ip access-group 22 out

RouterA(config)# interface fa0/0
RouterA(config-if)# ip access-group 22 in

RouterB(config)# interface fa0/0
RouterB(config-if)# ip access-group 22 in

RouterB(config)# interface s0/0
RouterB(config-if)# ip access-group 22 in

*RouterB(config)# interface fa0/0
RouterB(config-if)# ip access-group 22 out



38
What types of messages are sent periodically by devices configured for CDP?

probes

beacons

signals

*advertisements

routing updates

unicast



39
ACL statements operate in sequential, logical order. If a condition match is true, the rest of the ACL statements are not checked. If all of the ACL statements are unmatched, what happens to the packet?

The packets will be placed in a buffer and forwarded when the ACL is removed.

The packets will be sent to the source with an error notification message.

The implicit permit any statement placed at the end of the list will allow the packets to flow through uninhibited.

*The implicit deny any statement placed at the end of the list will cause the packets to be dropped.



40
Which statements are true regarding VTY passwords? (Choose two.)

VTY passwords must be encrypted.

All VTY lines do not need to use the same password.

*A VTY password is required to establish telnet sessions.

The VTY password is set with the command line console 0.

*The VTY password must be identical with the enable secret password.



41


Refer to the output from the show ip route command. What can be concluded from the output of this router command?

A preferred route to the destination has not been set.

*There are two equal cost paths to network 1.0.0.0.

Both interfaces are being used equally to route traffic.

A variance must be set to load-balance across multiple paths.



42


Refer to the exhibit. An ACL has been created that will deny the host 192.168.7.89 access to an FTP server located at 10.6.13.254.

access-list 111 deny tcp 192.168.7.89 0.0.0.0 10.6.13.254 0.0.0.0 eq 21
access-list 111 deny tcp 192.168.7.89 0.0.0.0 10.6.13.254 0.0.0.0 eq 20
access-list 111 permit ip any any

Which group of commands will place this ACL in the proper location?

Router2(config)#interface s0/0
Router2(config-if)#ip access-group 111 in

*Router2(config)#interface fa0/0
Router2(config-if)#ip access-group 111 out

Router3(config)#interface s0/1
Router3(config-if)#ip access-group 111 out

Router3(config)#interface fa0/0
Router3(config-if)#ip access-group 111 in

Router2(config)#interface fa0/0
Router2(config-if)#ip access-group 111 in



43
Which command is used to redirect debug information to a device that is connected though a Telnet session?

Router# monitor

Router# terminal redirect vty 0

Router# terminal monitor

*Router# monitor output vty 0



44


Given the above topology, which of the following statements are true? (Choose two.)

If RouterC receives a packet destined for 10.5.183.46, it will be forwarded out interface Serial 1.

*If RouterA receives a packet destined for 192.168.3.146, it will be forwarded out interface Ethernet 0.

*If RouterA receives a packet destined for 10.5.27.15, it will be forwarded out interface Serial 1.

If RouterB receives a packet destined for 10.5.27.83, it will be forwarded out interface Serial 0.

If RouterA receives a packet destined for 172.16.55.101, it will be forwarded out interface Serial 1.



45
Of the eight network users on the Human Resources department LAN, one cannot connect to the file server. The user's PC has successfully booted but can not see the network. What should be checked first?

the PC power cord

the file server

*the PC network interface card LEDs

the LAN switch in the wiring closet

the configuration of the router interface attached to the LAN



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CISCO CCNA 2 - Voucher Exam

1
Which protocol is used by e-mail servers to communicate with each other?
FTP
HTTP
TFTP
SMTP
POP
SNMP

2
Which command displays the active configuration file of a router?
Display startup-config
Display running-config
Show running-config
Show startup-config

3
What are the two basic functions used by a router to relay packets?
Filtering and switching
Path determination and filtering
Path determination and switching
Traffic analysis and filtering

4
Which of the following are advantages of using a static route? (Choose three.)
secure operation
highly adaptable
low maintenance configuration
low processor overhead
precise control of path selection

5
Which of the following are TCP services? (Choose three.)
address resolution
end-to-end communication
flow control
reliability of data delivery
path determination
data representation

6
What is the purpose of media access control?
It identifies which workstation has sent a frame.
It determines which Layer 3 protocol should handle a frame.
It identifies which Ethernet frame format to use on the network.
It determines which workstation on a shared medium LAN is allowed to transmit data.

7
Which of the following IP addresses are broadcast addresses if the subnet mask is 255.255.255.240? (Choose three.)
75.32.75.15
205.16.35.11
199.254.129.111
129.130.17.14
135.22.55.93
105.33.62.213

8
What is the default state of the interfaces on a router?
up, line protocol down
down, line protocol down
adminstratively down, line protocol down
up, line protocol up

9
How many bits are in IPv6 addresses?
16
32
64
96
128
258

10
Which OSI layer defines the functions of a router?
physical
data link
network
transport
session

11
What are the primary uses of Telnet? (Choose two.)
routing of data packets
transfer of data between end users
verification of application layer connectivity
connecting to remote network devices

12
Routers have different types of memory. Choose the answer that describes flash memory.
provides working storage
stores a fully functional IOS image
stores the startup configuration file
initializes the code used to boot the router

13


Which of the following is true regarding CDP and the graphic shown?
CDP running on Router D will gather information about routers A, B, C, and E.
By default, Router A will receive CDP advertisements from routers B and C.
If routers D and E are running different routing protocols, they will not exchange CDP information.
Router E can use CDP to identify the IOS running on Router B.

14
Which of the following describes path determination at the network layer?
router compares available ARP table information to select the best path
router uses routed protocol to determine the best path for data transmission
router compares available routing table information to select the best path
router uses a routing protocol to compare LAN equipment to route data through
switch compares available routing table information to select the best path

15
Which command turns on a router interface?
Router(config-if)# enable
Router(config-if)# no down
Router(config-if)# s0 active
Router(config-if)# interface up
Router(config-if)# no shutdown

If dynamic routing is not configured on a router, how do routing table updates occur?
Link state advertisements are sent from other routers.
Updates are made to the routing table by the administrator.
Best path information is communicated by network hosts.
The routing table is updated by neighboring routers.

17
What does TCP use to begin the three-way handshaking process?
The destination host sends an ACK segment.
The sending host sends a SYN segment.
The sending host sends a SYN and ACK segment.
The destination host sends a SYN segment.

18
Which statement accurately describes the way DHCP assigns IP addresses?
The network administator must re-assign a previously assigned address to the DHCP pool once a host no longer requires it.
DHCP offers a many-to-one ratio of IP addresses to users.
DHCP only allows users to obtain IP addresses if users have a profile in the DHCP pool.
DHCP has the ability to reclaim an IP address after a host workstation releases it.

19
Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
binary ANDing

20
At which layer of the TCP/IP model does Telnet operate?
application
presentation
session
transport
internet
network access

21
Four concurrently running Telnet connections have been initiated. Which commands would enable the network administrator to view all of them? (Choose two.)
Router> show configuration
Router> show connections
Router> show sessions
Router# show configuration
Router# show connections
Router# show sessions

22
How many IP addresses can be assigned to host devices on each subnet of a Class B network with a subnet mask of 255.255.255.248?
3
5
6
8
30
8190

23


Pings between Atlanta and Dallas are successful. If a hostname table or DNS connection is not available, which command will successfully establish a remote connection from Atlanta to Dallas via Telnet?
Atlanta> connect Dallas
Atlanta> 197.72.3.2
Atlanta# 206.157.85.1
Atlanta# telnet Dallas

24
When does a distance vector routing protocol set a hold-down timer on a route?
when the metric value of the route decreases
when the route is marked as inaccessible
when the metric value for the route improves
when a regular update is received from a neighboring router

25
Which of the following is considered to be a multi-port bridge?
hub
switch
router
repeater

26
All numbering systems have a beginning or first digit and an end or last digit. Select the first and last digits representing Base 16, hexadecimal. (Choose two.)
0
A
9
F
15

27
Which of the following protocols operate at the application layer of the OSI model? (Choose two.)
FTP
TCP
UDP
HTTP

28
Which transport layer unit of information places the port number in the header?
data
segment
packet
frame
bit

29
For which condition will the ARP protocol be used?
The destination IP address is unknown.
The destination MAC address is unknown.
The source IP address is unknown.
The source MAC address is unknown.

30
Which protocol can be used to load or retrieve Cisco IOS images to or from a router?
SNMP
TFTP
UDP
TCP

31

What command enables CDP on the interface of a router?
Router(config-if)# cdp enable
Router(config-if)# cdp run
Router(config-if)# cdp start
Router(config-if)# cdp config

32


After issuing the command traceroute 192.168.4.2 from Router A, the following information is returned.

Tracing the route to Router_D (192.168.4.2)
1 Router_B (192.168.2.2) 16 msec 16 msec 16 msec
2
3

What can be concluded about the network shown in the graphic based on the output given?
Network 192.168.5.0 is missing from the routing table on Router A.
There is a problem with the connection between Router B and Router C.
Router C is not running CDP.
Some of the routers are non-Cisco devices.
Router B was not able to return ICMP TEMs to Router A.

33
What happens to a MAC address in a frame as it passes from router to router on its way to its destination?
Nothing, it remains the same.
MAC addresses are not passed from router to router.
It changes from router to router.
It keeps the MAC address of the first router it passes through.

34
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?
There was a POST failure.
The incorrect IOS loaded.
There was an error in the startup configuration file.
The configuration register was set to ignore NVRAM.

35
Which criteria identify a Class B address? (Choose two.)
decimal number in first octet between 127 - 191
decimal number in first octet between 128 - 192
decimal number in first octet between 128 - 191
first bit of binary IP address is 0
first two bits of binary IP address are 10
first three bits of binary IP address are 110

36
Which of the following show commands would display the location of the IOS boot image?
show flash
show NVRAM
show version
show running-config
show startup-config

37
What is the purpose of the IOS enable secret command?
To allow the user to establish password protection on incoming Telnet sessions
To allow the user to establish password protection on the console terminal
To enable the user to access the User mode
To enable the user to enter a password that will be encrypted

38
Which of the following describes shared media environment?
a collision free environment made up of systems on the same medium
multiple hosts have access to the same cable ISP system
multiple hosts have access to the same medium.
multiple router environment in a mesh topology

39
What is the purpose of Positive Acknowledgment and Retransmission (PAR)?
PAR allows the presentation layer to request that data be resent in a format the destination host can process.
PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.
PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent.
PAR is used to renegotiate the window size during the synchronization process.

40
Which of the following describes the function of the Domain Name Service system?
It associates IP addresses to domain names.
It associates MAC addresses to domain names.
It associates DHCP addresses to domain names.
It associates TCP port numbers to domain names.

41
Which device imposes boundaries on broadcast traffic?
bridge
repeater
router
transceiver

42


The graphic depicts two workstations attached to two different hubs that are separated by a repeater. How many collision domains exist in this scenario?
one
two
three
four
five

43
Which TCP/IP layer provides services that support a logical connection between the sending and receiving hosts?
application
network
IP
transport
presentation
session

44
What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?
100 meters
185 meters
300 meters
500 meters

45
Which of the following types of networks pass a token sequentially to each host? (Choose two.)
Ethernet
Token Ring
FDDI
Frame Relay
ISDN

46

Identify the correct pairing of protocols and their classifications.
Routed - IP, IGRP
Routed - RIP, OSPF
Routing - IPX, RIP
Routing - OSPF, IGRP

47
Which Ethernet data link layer frame comparison is correct?
higher speed networks require more fields be included in the frame
the faster speed frame structures are incompatible with the slower speed networks
the frame structure changes with each higher speed, however, they are compatible with slower speeds
all speeds of Ethernet have nearly identical frame structures

48
Which switching mode describes a switch that transfers a frame as soon as the destination MAC address is read?
fragment-free
cut-through
store-and-forward
latency forwarding

49
Which TCP/IP model layer supports both LAN and WAN technologies?
network access layer
internet layer
transport layer
application layer

50
What is the first step a Cisco router performs after it is powered up?
Empties contents of NVRAM
Looks for the configuration file
Performs a POST
Starts the operating system

51
Which of the following are functions of RAM? (Choose three.)
contains startup configuration file
stores routing table
holds fast switching cache
retains contents when power is removed
stores running configuration file

52
How does a network device determine a collision has occurred on an Ethernet network?
The voltage of the signal on the networking media will increase.
The voltage of the signal on the networking media will decrease.
The voltage of the signal on the networking media will remain the same.
The voltage of the signal on the networking media will increase and decrease rapidly.

53
If a network node is connected to a switch port using full-duplex transmission, which of the following conditions exists?
a two-node collision domain
no collision domain
a multi-port collision domain
no broadcast domain
a two-node broadcast domain

54
Given the IP address 10.122.200.77 and subnet mask 255.255.255.224, what is the subnet address?
10.0.0.0
10.0.0.32
10.0.0.64
10.122.200.0
10.122.200.32
10.122.200.64

55
Which command will display routing table information about all known networks and subnetworks?
Router# show ip interfaces
Router# show ip connections
Router# show ip route
Router# show ip networks

56
Which of the following statements describe distance vector routing updates? (Choose three.)
Topology changes are transmitted to all routers at once.
Routers send their entire routing tables in distance vector updates.
Path cost metrics for each route are included in the updates.
Periodic updates are sent directly to every router in the network.
Routing updates are sent periodically to adjacent routers.
Routers send only the state of their own links in distance vector updates.

57
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
4
5
8
10

58
What type of routing uses information that is manually entered into the routing table?
dynamic
interior
static
standard

59
Which two statements are true regarding ICMP? (Choose two.)
ICMP provides reliability for the TCP/IP protocol stack.
ICMP is a component of the TCP/IP protocol stack.
ICMP notifies the sender that data transmission errors have occurred.
ICMP is connection-oriented.
ICMP messages are propagated to all intermediate devices.

60
Which of the following are benefits of creating a subnetwork structure in an IP network? (Choose three.)
permits network address duplication
allows for address flexibility
prevents address replication
provides broadcast containment
adds low-level security
allows for more network hosts available



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CISCO CCNA 2 - Module 10 Exam Answers

1 Which of the following describe how TCP adds reliability to communication? (Choose three.)
• Hosts using TCP set up virtual circuits at the beginning of the transmission using the three-way handshake.
• Hosts using TCP set the error-checking frequency at the beginning of the transmission and maintain this frequency for the duration of the data transfer.
• When a sending host does not receive an acknowledgment within a timed interval it retransmits data.
• The receiving host acknowledges that it has received the expected number of segments and requests additional data.

• The receiving host acknowledges any incorrectly received data and requests retransmission of damaged or missing bytes.
• The sending host transmits each segment twice to ensure that data is not lost.


2 A computer programmer is developing software that requires a reliable stream of data. Which protocol can be used in the software design to eliminate the need for building error detection and recovery into the application program?
• TCP
• IP
• ICMP
• UDP
• HTTP


3 Why is TCP considered a connection-oriented protocol?
• It establishes a virtual connection between hosts using a two-way handshake.
• It uses IP to guarantee delivery of packets between hosts.
• It requires hosts to go through a synchronization process prior to data transmission.
• It creates a connection that depends on application layer protocols for error detection.

4 At which point in the transmission process are segments numbered?
• when received
• when reassembling
• before transmission
• while negotiating window size

5 What is dynamically assigned by the source host when forwarding data?
• destination IP address
• destination port number
• default gateway address
• source IP address
• source port number


6 How are originating source port numbers assigned during the data encapsulation process?
• assigned manually by the user when starting the application
• assigned dynamically by the source host
• assigned by the routing protocol during the lookup process
• assigned by the destination host during session negotiation


7 Which of the following would an administrator do to defend against a denial of service SYN flooding attack? (Choose two.)
• Hide the source of incoming IP addresses.
• Decrease the connection timeout period.
• Synchronize all host communication.
• Increase the connection queue size.
• Flood the network with false SYN requests.


8 When a host receives a data segment, what allows the host to determine which application should receive the segment?
• IP source address
• IP destination address
• PAR
• sliding window
• port number
• SYN packet

9 What is used by UDP to determine if the data or header has been transferred without corruption?
• lower layer protocols
• checksum
• PAR
• sliding window
• acknowledgment and retransmission
• IP

10 What is the purpose of using port numbers in the transport layer?
• to identify the segment as being either TCP or UDP
• to provide reliability during data transport
• to identify the interface port number used by the router when forwarding data
• to track multiple conversations that occur between hosts


11 In the TCP header, which of the following determines the amount of data that can be sent before receiving an acknowledgment?
• segment number
• priority number
• window size
• value in the length field
• value in the port field
• acknowledgment number

12 What does TCP use to ensure reliable delivery of data segments?
• upper layer protocols
• lower layer protocols
• sequence numbers
• port numbers


13 Which of the following protocols uses UDP for transport layer services?
• SMTP
• HTTP
• DNS
• FTP


14 What type of segment and data is shown in the graphic?
• a UDP segment carrying e-mail traffic
• a TCP segment carrying FTP traffic
• an IP segment carrying FTP traffic
• a UDP segment carrying web traffic
• a TCP segment carrying web traffic
• an IP segment carrying e-mail traffic


15 What is the purpose of Positive Acknowledgment and Retransmission (PAR)?
• PAR allows the presentation layer to request that data be resent in a format the destination host can process.
• PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.
• PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent.
• PAR is used to renegotiate the window size during the synchronization process.


16 Which of the following are functions of the TCP protocol? (Choose three.)
• translation of data
• synchronization
• path determination
• flow control
• data representation
• reliability


17 What is used by both TCP and UDP when creating a segment?
• IP address
• MAC address
• IPX address
• socket or port number
• acknowledgment number
• sequence number


18 Which authority has control over the assignment of port numbers for applications?
• IEEE
• IANA
• InterNIC
• Software Developers Association


19 Which of the following describe types of port numbers that can be represented in the headers of TCP and UDP segments? (Choose three.)
• connectionless
• well-known
• operational
• dynamic
• registered

• static


20 What is the purpose of the three-way handshake that occurs between hosts using TCP as the transport layer protocol?
• to increase the number of packets that can be sent before an acknowledgment is required
• to allow a host to forward data to a router
• to establish a round trip connection between sender and receiver before data is transferred
• to provide a mechanism for data encryption and compression


21 During the encapsulation process, in which order are the IP address, MAC address, and port number assigned when the router is establishing communication with the TFTP server?
• IP address, MAC address, port number
• MAC address, IP address, port number
• port number, IP address, MAC address
• port number, MAC address, IP address

22 Which of the following describes a type of denial of service attack designed to exploit the normal function of the TCP three-way handshake?
• A host sends a packet with a spoofed source IP address.
• A host sends a packet with an incorrect destination IP address.
• A source sends a packet containing a garbled header.
• A host sends an oversized packet that fills the memory buffers of the destination host.
• A host sends a packet that contains a virus.
• A host sends a packet that contains a worm.


23 Which transport layer unit of information places the port number in the header?
• data
• segment
• packet
• frame
• bit

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