CH 8

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1.
1 point
Refer to the exhibit. A user reports that calls made on a newly added IP phone are often choppy and of poor quality. A network administrator checks the configuration of the switch AL_SW1 on the interface Fa0/11 to which the new IP phone is connected. According to the display of the show mls qos interface fa0/11 command, what could be a possible cause for the poor quality of voice service?
2.
1 point
IP phones are unable to register with the router and download their firmware and configuration files. A colleague advises that you should check to ensure that the protocols required for this process are not blocked by the IOS firewall. What two lines should you look for in the ACL? (Choose two.)
3.
1 point
Which video application has the strictest latency requirement?
4.
1 point
In testing an IP telephony deployment, a network administrator notices that IP phones are unable to register with the router and download configuration files. A coworker suggests checking that the protocols needed for the process are not blocked by the firewall. What two protocols should be permitted by the ACL in order for the IP phones to register and obtain configuration files? (Choose two.)
5.
1 point
A network technician is adding a wireless access point to an existing network. However, the wireless clients will not associate with the AP. What action can be taken to isolate the root cause?
6.
1 point

A network technician is adding a wireless access point to an existing network. However, the wireless clients will not associate with the AP. What action can be taken to isolate the root cause?Enable encryption on the AP.Remove the IP address from the AP.Temporarily disable ACLs on the AP.Shut down the LAN interface on the AP.Refer to the exhibit. An administrator is troubleshooting why host CL1 cannot communicate with the other hosts in the network. What appears to be the problem?
7.
1 point
Refer to the exhibit. A user is not able to use a VoIP phone. Based on the output, what could be the problem?
8.
1 point
Refer to the exhibit. The lightweight access point has just been added to the network. Which protocol is used for the access point to discover the WLAN controller?
9.
1 point
Refer to the exhibit. Wireless network users are complaining that they are not able to register with the Wireless LAN Controller. Wireless clients use DHCP to obtain their IP configuration information from R1. Based on the output that is shown, what is the reason that the wireless clients are unable to register with the controller?
10.
1 point
Refer to the exhibit. Which statement is true about the debug ephone register command?
11.
1 point
Refer to the exhibit. A network administrator needs to connect an IP phone to FastEthernet 0/22,which is currently configured to support a workstation. What three configuration commands are recommended to accommodate the addition of the phone? (Choose three.)
12.
1 point
What value does a Cisco IP phone receive in DHCP option 150?
13.
1 point
How does a Cisco IP phone discover which VLAN to use for voice traffic?
14.
1 point
Refer to the exhibit. The network security auditing team has added access lists to the network configurations in an attempt to improve network security. Users of the wireless network are now complaining that they can no longer associate to the wireless LAN. Based on the output shown,what must be added to the access list to restore connectivity?
15.
1 point
Refer to the exhibit. After a major network upgrade, network users complain about poor video application performance. A network administrator verifies that all trunk links are up and operational and the EtherChannel configuration is correct. The output of the show interfaces port-channel command reveals that there is a 0 packet output rate over the last 5 minutes on the Po2 uplink. What could be done to correct the issue?
16.
1 point
Users complain that voice calls are choppy and of poor quality. A network administrator verifies the settings on the interface and discovers that no QoS has been configured. Which priority level should be applied to the voice traffic in order to improve the quality of voice calls?
17.
1 point
Refer to the exhibit. Users who are connected to SW1 are part of the multicast group 224.1.1.1,and they are complaining that they do not receive a video stream from the source. Based on the provided output, what could be done to remedy the problem?
18.
1 point
Refer to the exhibit. Users complained that they have experienced performance degradation for all video applications that are coming from the video server. Based on the provided outputs, what could be the possible cause of the problem?
19.
1 point
Refer to the exhibit. A user has a PC that connects to a VoIP phone and the phone connects to port Fa0/1 on the switch. The user is complaining about not being able to access the network. The user cannot access any local print servers and cannot ping any neighboring devices. The administrator attempts to ping the PC of the user but is unsuccessful. Based on the output of the
show port-security command, what could be the issue?
20.
1 point
Refer to the exhibit. Company A is deploying IP telephony in their offices. A network technician unplugs the patch cable that currently connects to the PC from the wall jack and then plugs the cable into the port labeled as 10/100 PC on the IP phone. The technician next uses another patch cable to connect the switch port on the IP phone to the wall jack. After completing these changes, the technician notices that the IP phone cannot initialize and that the PC loses connectivity. The technician then checks the configuration on the switch. According to the output of the show running-config command, what should the technician do next in order to find the cause of the problem?
21.
1 point
A network administrator is troubleshooting an IP multicast problem. After the administrator alters an IGMP configuration, which command should be used to verify the multicast routing table entries?
22.
1 point
Refer to the exhibit. An administrator is troubleshooting a video multicast problem on router R1. Users on the FastEthernet 0/1 are not receiving multicast traffic over the Serial 0/0/0 WAN link. Which statement correctly identifies the problem?