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The D channel bandwidth is 16K and the two B channels are 64K each totaling 144K.
Chapter: 3
121. Which configuration task must you complete if a remote Frame Relay router does not support Inverse ARP?
A. configure static maps B. define an IP address locally
C. disable DHCP on the Frame Relay router
D. configure a static route to the remote network
Answer: A
Frame-Relay will send a hello packet to the device on the other side of the point to point connection. This is
known as inverse-ARP. If the other side does not support Inverse-ARP you must configure a static map.
Chapter: 3
122. What does a frame relay switch use to distinguish between each PVC connection?
A. data-link connection identifiers (DLCIs) B. BECNs
C. FECNs D. the Local Management Interface (LMI)
Answer: A
Each PVC is assigned a DLCI that uniquely identifies that connection between the router and the frame-relay
switch. The DLCI is only locally significant .
Chapter: 3
123. What are four benefits that can result from applying ISDN networking?
(choose 4) A. Full-time connectivity across the ISDN is spoofed by Cisco IOS routers using dial-on-demand routing.
(DDR)
B. Small Office and Home Office sites can be economically supported with ISDN Basic Rate Interface (BRI) services.
C. ISDN replaces Signaling System 7(SS7) in the Public Switched Telephone Network (PSTN) backbone.
D. ISDN can be used as a backup service for a leased-line connection between the remote and central offices
E. Modem racking and cabling can be eliminated by integration of digital modem cards on Cisco IOS
Network Access Servers (NAS) Answer: A, B, D, E
ISDN uses SS7 signaling at the switching equipment.