151 Identify 3 characteristics of ISDN?
A.) Transports voice and data
B.) Transports voice only
C.) Support both BRI and PRI
D.) Runs over existing phone lines
E.) Same as X.25
Ans A C D
ISDN supports voice, data, and video. It runs over existing phone lines and supports 128K (BRI)
and T1 (PRI).
152 Identify the 3 characteristics of IGRP?
A.) Uses hop count as a metric
B.) Supports multiple unequal paths
C.) Administrative distance is 100
D.) Configured with an Autonomous system number
E.) Link state
Ans B C D
IGRP is a distance vector routing protocol, it's degree of trustworthiness is 100, it can support up
to 6 un-equal paths and must be configured with an autonomous system number.
153 Identify 2 features of PPP CHAP authentication?
A.) Username and password is sent in clear text
B.) Authentication messages are sent periodically during the connection
C.) Less secure then PAP
D.) Local router 'challenges' the remote router
Ans B D
PPP CHAP authentication message are sent periodically during the connection by challenging
the other end of the connection.
It is more secure than PAP and passwords and username are encrypted.
154 Identify the default IPX serial encapsulation?
A.) Novell-Ether
B.) SDLC
C.) SNAP D.) HDLC
Ans D
The default IPX serial encapsulation is HDLC.
155 Identify the hardware component that stores the backup configuration?
A.) RAM
B.) NVRAM
C.) Flash
D.) ROM
Ans B
NVRAM contains the backup config. RAM is the dynamic memory area, ROM contains the boot
strap code and Flash contains the IOS.
156 Identify the extended IP access-list number range?
A.) 600 - 699
B.) 1 - 99
C.) 900 - 999
D.) 100 - 199
Ans D
The extended IP access-list range is 100-199.
157 Identify 3 Fast Ethernet technologies?
A.) 100 Base FastEther
B.) 100 Base FX
C.) 100 Base T4
D.) 100 Base TX
Ans B C D100 BaseFastEther is false. 100 Base FX, TX and T4 are all valid.
158 Identify the OSI layer which is responsible for end-to-end connections?
A.) Network
B.) Transport
C.) Session
D.) Data link
E.) TCP
Ans B
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