CCNA 1 version 4 CHAPTER 7

1 What access-point feature allows a network administrator to define what type of data can enter the wireless network?

encryption

hacking block

traffic filtering

MAC address filtering

authentication

2 What are two authentication methods that an access point could use? (Choose two.)

WEP

WPA

EAP

ASCII

pre-shared keys

3 Refer to the graphic. In the Wireless menu of a Linksys integrated router, what configuration option allows the presence of the access point to be known to nearby clients?

Network Mode

Network Name (SSID)

Radio Band

Wide Channel

Standard Channel

SSID Broadcast

4 Which statement is true concerning wireless bridges?

connects two networks with a wireless link

stationary device that connects to a wireless LAN

allows wireless clients to connect to a wired network

increases the strength of a wireless signal

5 What term describes the encoding of wireless data to prevent intercepted data from being read by a hacker?

address filtering

authentication

broadcasting

encryption

passphrase encoding

6 Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?

The router supports encryption and authentication.

The router supports both wired and wireless connections.

The router supports 802.11b, 802.11g, and 802.11n devices.

The router supports connectivity through infrared and radio frequencies.

7 Which statement is true about open authentication when it is enabled on an access point?

requires no authentication

uses a 64-bit encryption algorithm

requires the use of an authentication server

requires a mutually agreed upon password

8 Which WLAN component is commonly referred to as an STA?

cell

antenna

access point

wireless bridge

wireless client

9 Which statement is true concerning an ad-hoc wireless network?

created by connecting wireless clients in a peer-to-peer network

created by connecting wireless clients to a single, centralized AP

created by connecting multiple wireless basic service sets through a distribution system

created by connecting wireless clients to a wired network using an ISR

10 What does the Wi-Fi logo indicate about a wireless device?

IEEE has approved the device.

The device is interoperable with all other wireless standards.

The device is interoperable with other devices of the same standard that also display the Wi-Fi logo.

The device is backwards compatible with all previous wireless standards.

11 What are two benefits of wireless networking over wired networking? (Choose two.)

speed

security

mobility

reduced installation time

allows users to share more resources

not susceptible to interference from other devices

12 Which two statements about a service set identifier (SSID) are true? (Choose two.)

tells a wireless device to which WLAN it belongs

consists of a 32-character string and is not case sensitive

responsible for determining the signal strength

all wireless devices on the same WLAN must have the same SSID

used to encrypt data sent across the wireless network

13 Which two statements characterize wireless network security? (Choose two.)

Wireless networks offer the same security features as wired networks.

Wardriving enhances security of wireless networks.

With SSID broadcast disabled, an attacker must know the SSID to connect.

Using the default IP address on an access point makes hacking easier.

An attacker needs physical access to at least one network device to launch an attack.

14 What type of authentication does an access point use by default?

Open

PSK

WEP

EAP

15 A technician has been asked to provide wireless connectivity to the wired Ethernet network of a building. Which three factors affect the number of access points needed? (Choose three.)

the size of the building

the number of solid interior walls in the building

the presence of microwave ovens in several offices

the encryption method used on the wireless network

the use of both Windows and Appletalk operating systems

the use of shortwave or infrared on the AP

16 What are three advantages of wireless over wired technology? (Choose three.)

more secure

longer range

anytime, anywhere connectivity

easy and inexpensive to install

ease of using licensed air space

ease of adding additional devices

17 What is the difference between using open authentication and pre-shared keys?

Open authentication requires a password. Pre-shared keys do not require a password.

Open authentication is used with wireless networks. Pre-shared keys are used with wired networks.

Pre-shared keys require an encrypted secret word. Open authentication does not require a secret word.

Pre-shared keys require a MAC address programmed into the access point. Open authentication does not require this programming.

18 Why is security so important in wireless networks?

Wireless networks are typically slower than wired networks.

Televisions and other devices can interfere with wireless signals.

Wireless networks broadcast data over a medium that allows easy access.

Environmental factors such as thunderstorms can affect wireless networks.

19 Why is IEEE 802.11 wireless technology able to transmit further distances than Bluetooth technology?

transmits at much lower frequencies

has higher power output

transmits at much higher frequencies

uses better encryption methods

20 What are the two WEP key lengths? (Choose two.)

8 bit

16 bit

32 bit

64 bit

128 bit

21 Complete the following sentence: WEP is used to ______ , and EAP is used to _____ wireless networks.

encrypt; authenticate users on

filter traffic; select the operating frequency for

identify the wireless network; compress data on

create the smallest wireless network; limit the number of users on

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