At which layer of the OSI model does multiplexing take place?
Which command can be used to view the cable type that is attached to a serial interface?
Router(config)# show interfaces
Router(config)# show controllers
Router(config)# show ip interface
Router(config)# show ip interface brief
Refer to the exhibit. What type of Layer 2 encapsulation will be used for connection D on the basis of this configuration on a newly installed router: RtrA(config)# interface serial0/0/0
RtrA(config-if)# ip address 22.214.171.124 255.255.255.252
RtrA(config-if)# no shutdown
Refer to the exhibit. Which statement describes the status of the PPP connection?
Only the link-establishment phase completed successfully.
Only the network-layer phase completed successfully.
Neither the link-establishment phase nor the network-layer phase completed successfully.
Both the link-establishment and network-layer phase completed successfully.
Match the PPP option with the correct description. (Not all options are used.)
Which is an advantage of using PPP on a serial link instead of HDLC?
option for authentication
higher speed transmission
option for session establishment
How does PPP interface with different network layer protocols?
by using separate NCPs
by negotiating with the network layer handler
by encoding the information field in the PPP frame
by specifying the protocol during link establishment through LCP
Which address is used in the Address field of a PPP frame?
a single byte of binary 00000000
a single byte of binary 10101010
a single byte of binary 11111111
the IP address of the serial interface
Match the phases of establishing a PPP session in the correct order. (Not all options are used.) Compression >>Increases the effective throughput on PPP connections by reducing the amount of data in the frame that must travel across the link. Multilink >>Provides load balancing over the router interfaces. Maximum Receive Unit >>The maximum size of the PPP frame – not scored – Authentication Protocol >> The two choices are Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP)
Which three physical layer interfaces support PPP? (Choose three.)
Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?
Serial 0/0/0 is up, line protocol is up
Serial 0/0/0 is up, line protocol is down
Serial 0/0/0 is down, line protocol is down
Serial 0/0/0 is up (looped)
Serial 0/0/0 is up (disabled)
Serial 0/0/0 is administratively down, line protocol is down
Which three are types of LCP frames used with PPP? (Choose three.)
Which protocol will terminate the PPP link after the exchange of data is complete?
During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)
Which three statements are true about PPP? (Choose three.)
PPP can use synchronous and asynchronous circuits.
PPP can only be used between two Cisco devices.
PPP carries packets from several network layer protocols in LCPs.
PPP uses LCPs to establish, configure, and test the data link connection.
PPP uses LCPs to agree on format options such as authentication, compression, and error detection.
What PPP information will be displayed if a network engineer issues the show ppp multilink command on Cisco router?
the link LCP and NCP status
the queuing type on the link
the IP addresses of the link interfaces
the serial interfaces participating in the multilink
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Why is the serial link between router R1 and router R2 not operational?
In each case the expected username is not the same as the remote router hostname.
The passwords are different in both routers.
The encapsulation in both routers does not match.
The authentication type is not the same in both routers.
A network engineer is troubleshooting the loss of MPEG video viewing quality as MPEG video files cross a PPP WAN link. What could be causing this loss of quality?
PAP authentication was misconfigured on the link interfaces.
The clock rates configured on each serial interface do not match.
Link Quality Monitoring was not configured correctly on each interface.
The compress command was used when PPP was configured on the interfaces.
A network engineer is monitoring an essential, but poor quality, PPP WAN link that periodically shuts down. An examination of the interface configurations shows that the ppp quality 90 command has been issued. What action could the engineer take to reduce the frequency with which the link shuts down?
Issue the command ppp quality 70.
Issue the command ppp quality 100.
Set the DCE interface to a lower clock rate.
Use the bandwidth command to increase the bandwidth of the link.
Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?
The usernames do not match.
The passwords do not match.
The passwords should be longer than 8 characters.
The interface IP addresses are in different subnets.
In which situation would the use of PAP be preferable to the use of CHAP?
when router resources are limited
when multilink PPP is used
when plain text passwords are needed to simulate login at the remote host
when a network administrator prefers it because of ease of configuration
Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.
CHAP authentication failed because of an unknown hostname.
A PPP session was successfully established.
Both PAP and CHAP authentication were attempted.
The debug output is from router R2.
Match the steps to the PPP CHAP authentication process sequence. (Not all options are used.)