A) The Frame Relay encapsulation on the physical interface
B) The local DLCI on each subinterface
C) An IP address on the physical interface
D) The subinterface type as point-to-point
Correct Option - C
ExplanationIt is very important to remember when studying the CCNA exam objectives, and when configuring Frame Relay with point-to-point subinterfaces, that you do not put an IP address on the physical interface.
A) Supplied by the CSU/DSU
B) By the far end router
C) By the clock rate command
D) By the Physical layer bit stream timing
Correct Option - A
ExplanationClocking on a serial interface is always provided by the CSU/DSU (DCE device). However, if you do not have a CSU/DSU in your nonproduction test environment, then you need to supply clocking with the clock rate command on the serial interface of the router with the DCE cable attached.
A) Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
B) Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
C) Configure many subinterfaces in the same subnet.
D) Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Correct Option - A
ExplanationIf you have a serial port configured with multiple DLCIs connected to multiple remote sites, split horizon rules, stop route updates received on an interface from being sent out the same interface. By creating subinterfaces for each PVC, you can avoid the split horizon issues when using Frame Relay.
A) 802.1
B) Frame Relay
C) HDLC
D) PPP
Correct Option - D
ExplanationPPP is your only option, as HDLC and Frame Relay do not support these types of business requirements. PPP provides dynamic addressing, authentication using PAP or CHAP, and callback services.
A) DSL
B) PPPoE
C) Frame Relay
D) Dedicated T1
Correct Option - D
ExplanationIn a modern network, hybrid fibre-coaxial (HFC) is a telecommunications industry term for a network that incorporates both optical fiber and coaxial cable to create a broadband network.
Which of the following command options are displayed when you use the Router# show frame-relay ? command?
1.dlci
2.neighbors
3.lmi
4.pvc
5.map
A) 1 only
B) 2 and 4
C) 3, 4 and 5
D) All of the above
Correct Option - C
ExplanationThe show frame-relay ? command provides many options, but the options available in this question are lmi, pvc, and map.
A) HDLC
B) Cable
C) VPN
D) IPSec
Correct Option - D
ExplanationIPSec is an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model.