Deck 11: Network Settings and Wireless LAN Troubleshooting

Question 1

In Mobile IP, what information is advertised on the network?

A) whether an agent is a home agent, foreign agent, or both
B) care-of address
C) types of services provided
D) All of the above

Answer 1

D

Question 2

The Default IP Address and Default IP Subnet Mask fields are used only when ____ is enabled for the network.

A) DHCP
B) MAC
C) Mobile IP
D) Advanced IP

Answer 2

A

Question 3

Frames can be filtered based on the protocol of that frame, such as TCP, or ____.

A) FTP
B) HTTP
C) UDP
D) DHCP

Answer 3

C

Question 4

When configuring advanced settings for an AP, the ____ is the domain that is serving the AP.

A) Domain Suffix
B) Domain Name Server
C) Default Domain
D) Current Domain

Question 5

With some wireless networks using Mobile IP, up to ____ AAPs can be designated.

A) three
B) four
C) six
D) ten

Question 6

Filtering can be performed by configuring the access point so that it acts as a type of ____.

A) firewall
B) gateway
C) bridge
D) router

Question 7

When a stronger signal from one wireless device drowns out another a(n) ____ problem is occurring.

A) RF clash
B) near/far transmission
C) all-band interference
D) co-location

Question 8

When an access point is first turned on or when Mobile IP is first enabled on an access point, it obtains its own home agent information through advertising.

Question 9

When enabling Ethernet Timeout, the value in the Seconds field is generally set to between 30 and ____.

A) 40
B) 60
C) 90
D) 255

Question 10

The default protocol of older Novell Net-Ware LANs is ____.

A) TCP
B) UDP
C) IPX
D) SPM

Question 11

When using PSK (pre-shared key) authentication, the key value must be entered in both the Network key and Confirm network key fields and must match the key on the access point.

Question 12

Problems on the wireless device are more common than problems affecting access points.

Question 13

All access points have a(n) ____ connector that allows them to connect to an Ethernet hub or switch to provide wired network resources to wireless devices.

A) MN-11
B) RJ-45
C) PP-22
D) QR-9

Question 14

Dividing a wired network into ____ makes network management easier and decreases the spread of broadcast packets throughout the network.

A) segments
B) subnets
C) systems
D) routes

Question 15

A ten-character ASCII number is found in each frame that indicates the protocol and frame format.

Question 16

The MAC Addr field displays the default MAC address for the access point assigned by the manufacturer and cannot be changed.

Question 17

What is the most frequent cause of wireless transmission problems?

A) RF issues
B) misconfiguration
C) security breeches
D) faulty access points

Question 18

In Mobile IP, access points use the ____ table to determine the IP address of the visiting client's home agent.

A) network map
B) IP map
C) subnet map
D) home map

Question 19

Devices using ____ may cause all-band interference.

A) Mobile IP
B) WEP
C) frequency hopping spread spectrum
D) IEEE 802.11g

Question 20

In Mobile IP, the ____ agent is a router, firewall, or gateway on the visiting client's home network that serves as the anchor point for communication with the access point and the visiting client.

A) home
B) foreign
C) visiting
D) access point

Question 21

How would you solve a near/far transmission problem?

Question 22

In Mobile IP what are the home and foreign agents?

Question 23

List some strategies for making IEEE 802.11b/g and Bluetooth devices work together.

Question 24

The ____ layer is an attractive place to focus attention on improving the coexistence between Bluetooth and WLANs because it is where such techniques as Carrier Sense Multiple Access/Collision Avoidance (CSMA/ CA) and data rates are determined.

A) RF
B) software
C) PHY
D) MAC

Question 25

When scanning, the wireless network adapter sends a series of ____________________ frames and the APs within range respond with a Beacon frame that contains the capabilities of the wireless AP, such as the supported speeds, SSID, and security options.

Question 26

The primary port of the AP is almost always the ____________________ network port.

Question 27

Some computer viruses are known to cause ____.

A) duplicate SSID
B) incorrect MAC addresses
C) WLAN interference
D) intermittent connectivity problems for wireless connections

Question 28

For 802.11b and 802.11g wireless LANs only three channels (1, 6, and 11) can be used to co-locate multiple access points in the same area. This is because they ____.

A) are dedicated to TCP
B) overlap
C) are dedicated to DHCP
D) do not overlap

Question 29

If the wireless device is configured for DHCP yet no DHCP server is active, then Windows assigns a(n) ____________________ IP Addressing address that begins with the IP range 169.254.x.x.

Question 30

Describe the issue of duplicate SSIDs and why this may cause a wireless device to intermittently disconnect from the AP.

Question 31

What does a blinking green status indicator LED mean on an AP?

A) access point is operating normally but is not associated with any wireless devices
B) access point is associated with at least one wireless device
C) access point not operating
D) RF activity is occurring

Question 32

Describe the LED indicator lights that appear on an AP.

Question 33

What is a good first step in diagnosing system throughput issues?

A) monitor the speed of the access point
B) remove all devices from the system then add them back one at a time
C) determine if all devices are experiencing the problem or only a single device
D) identify the potential causes that may have the least impact on the system if they are changed

Question 34

When a wireless device attempts to connect to the WLAN it goes through a five-step process. List the steps in this process.

Question 35

When using WEP as part of the transitional security model, the same ____ key must be installed on the access point and the device. If not the wireless device may not operate properly.

A) secure
B) linked
C) shared
D) private

Question 36

Enabling the ____________________ stops radio transmissions from the access point for the specified number of seconds if the AP detects no activity on the Ethernet line.

Question 37

What is the purpose of the Ethernet Timeout setting on an access point?

Question 38

What are the three different frame formats?

Question 39

The ____________________ access point uses a subnet map to keep track of the home agent information for all visiting client devices.

Question 40

What are some of the factors that influence system throughput?

Question 41

How would you delete the current access point configuration and return all of the settings to the factory default settings on a Cisco Aironet AP?