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Chapter 10
Wide Area Networking Protocols
15.
C. Asynchronous Transfer Mode (ATM) provide simultaneous
transmission of voice, video, and data.
16.
A, D. Serial Line Internet Protocol (SLIP) and Point-to-Point Protocol
(PPP) are the protocols typically used for communications on dial-up
connections.
17.
B. Subinterfaces are created with the
interface
serial0.
#
command. This is followed by the type of subinterface used, either
point-to-point or multipoint.
18.
D. The committed information rate is used in Frame Relay to set the
transfer rate between the router and the Frame Relay switch.
19.
A. The ISDN B channel used in BRI is 64Kbps. Each Basic Rate Inter-
face used two Bearer (B channels) and one Data (D Channel).
20.
A, B, C, D. ISDN uses SS7 signaling.
21.
B. To set up authentication, you must use the
username
command
with the hostname of the remote router. This is case sensitive.
22.
B. Frame Relay is a packet-switching technology that uses high-quality
digital lines to get speeds up to T3.
23.
A. The command
show
isdn
status
shows that a router has estab-
lished layer-1 and layer-2 connectivity to the telephone company
ISDN switch.
24.
C. If you just type from interface configuration mode,
encapsulation
frame-relay
, the encapsulation type will be Cisco.
25.
D. The LMI provides keepalives between the router and the frame
switch to verify that the link and connection are still active.
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