24.which wan technology uses high-perFORMance digital lines and IS
packet switched?
a.fddi
b.isdn
c.atm
d.frame relay
选d这题非常有争议，有人选了c理由是frame relay 不是pacdet switched，这个
理由是错的，frame relay属于packet switched的，另外有人考了1000分是选d。
25. Which router component stores routing tables, ARP
cache and packet buffers?
A. ROM
B. RAM
C. NVRAM
D. Flash memory
选b
26.Given the router configurations shown, which networks will be found in RouterB’s routing
table,
assuming a properly configured network?
A. 192.168.3.0
192.168.4.0
192.168.5.0
192.168.6.0
192.168.7.0
172.16.0.0
B. 192.168.3.0
192.168.6.0
192.168.7.0
C. 192.168.3.0
192.168.4.0
192.168.5.0
192.168.6.0
192.168.7.0
D. 172.16.0.0
E. 192.168.3.0
192.168.4.0
192.168.5.0
选b因为igrp的自治系统号配置不一样
27. You telnet to a host on a remote network. Which MAC address will be present in the
ARP table when you issue the show arp command?
A. MAC address of the destination host Ethernet port
B. MAC address of the local router Ethernet port
C. MAC address of the destination router Serial port
D. MAC address of the local router Serial port
选b因为是telnet所以是以太接口，又因为是远程登陆所以是本地的接口地址
28 .A routing table contains static, RIP, and IGRP routes for the same destination
network. Which route would normally be used to forward data?
A. The IGRP route
B. The static route
C. The RIP route
D. All three will load balance
选: B 请看英文版路由部分
29. If window size is changed from 3000 to 4000 during the data transfer stage of a TCP
session, what can a sending host do?
A. Transmit 3000 bytes before waiting for an acknowledgement.
B. Transmit 4000 packets before waiting for an acknowledgement.
C. Transmit 4000 bytes before waiting for an acknowledgement
D. Transmit 4000 segments before waiting for an acknowledgement.
E. Transmit 3000 frames before waiting for an acknowledgement
F. Transmit 3000 packets before waiting for an acknowledgement
选 C 我考试也碰到了这道题，我选对了，这个提一直有争议，不过现在有结论了。
30.Which sequence of actions will allow telneting from a user's PC to a router using
TCP/IP?
A. Connect the PC's COM port to the router's console port using a straight-through cable
B. Connect the PC's COM port to the router's console port using a crossover cable.
C. Connect the PC's COM port to the router's Ethernet port using a straight-through cable.
D. Connect the PC's Ethernet port to the router's Ethernet port using a crossover cable.
E. Connect the PC's Ethernet port to the router's Ethernet port using a rollover cable.
F. Connect the PC's Ethernet port to the router's Ethernet port using a straight-through
cable.
选d我考试也碰到了这道题，这种题由3种变化，只要理解下面便不用怕了:
如果是telnet那么就是用pc's ethernet;如果是超级终端就用pc's com口
crossover电缆就是交叉电缆，网线的两头1和3、2和6对调。用于hub和hub
（级联口除外），交换机和交换机，微机和微机等。 rallover就是
电缆两头1到8顺序完全相反。
31.Which encapsulation type should be used for the S0 port of Router R2?
A. SAP
B. HDLC
C. ARPA
D. Novell-Ether
选b 主要看图，有2种变化，另外问的是R3的接口，那么选d。
33.What are the advantages of using the OSI layered network model? (choose three)
A. Allows multiple-vendor development through standardization of network components.
B. Creates a list of communication rules that all companies must implement to get onto
the Internet.
C. Allows various types of network hardware and software to communicate.
D. Prevents changes In one layer from affecting other layers, so It does not hamper
development
E. Allows companies to develop proprietary Interfaces
选ACD
34.. What are possible causes of LAN traffic congestion?(choose four)
A. too many hosts In a broadcast domain
B. full duplex operation
C. Broadcast storms
D. multicasting
E. segmentation
F. low bandwidth
选acdf
35.A new host has been connected to a workgroup switch.Although its Layer 3
configuration is correct,the host is unable to access the server resources In Its network
segment. What Is a likely cause of this problem?
A. The router lacks a routing table entry for the new host
B. The host switch port os assigned to the Incorrect VLAN.
C. The host MAC address is incorrectly configured
D. A VTP Instance for the new host has not been Inltlallazed
选b，这我考了，正确
36. Which configuration register selling tells the router to look in NVRAM for the boot sequence?
A. 0x42
B. 0x2102
C. 0x001
D. 0x2101
选b
如果是in ROM for the boot sequence那么就选d
37.You are given A PC,A router, and a cable. Select the correct combination that will
allow you to log into the router locally using a terminal emulation program such as
HyperTerminal.
A. Connect the PC’s COM port to the router’s console port using a straight-through cable.
B. Connect the PC’s COM port to the router’s console port using a rollover cable.
C. Connect the PC’s COM port to the router’s Ethernet port using a slight-through cable.
D. Connect the PC’s Ethernet port to the router’s Ethernet port using a rollover cable.
E. Connect the PC’s Ethernet port to the router’s Ethernet port using a straight-through
cable.
选b 具体分析已在30题分析过了。
38.Given the configuration example:
interface ethernet0
ipx network 4a
ipx access-group 800 out
interface ethernet1
ipx network 3d
interface ethernet2
ipx network tc
access-list 800 permit 3d 4a
39.Which two actions result from implementing this configuration? (Choose two.)
A. IPX network 5c will not receive any traffic.
B. Traffic from network 3d for network 4a will be forwarded out e0.
C. Traffic from network 3d for network 3d will be forwarded out e0.
D. Traffic from network 3d, destined fro network 4a, will be forwarded out e2.
E. The access list is applied to an outgoing interface and filters outbound traffic
这是个有争议的题，一种选de，一种是be，我是偏向de的
40. What is the maximum number of subnets that can be assigned to networks when
using the address 172.16.0.0 with a subnet mask of 255.255.240.0? (Assume older
version UNIX workstations are in use.)
A. 16
B. 32
C. 30
D. 14
E. It is an invalid subnet mask for the Network
选 D我的一个朋友碰到了，千万不要选16，即主要2的n次减2
41.Which command retrieves the configuration file from NVRAM?
A. Config NVRAM
B. Copy NVRAM running-config
C. Copy startup-config running-config
D. Copy running-config startup-config
选c
42.Which router command allows you to determine if an IP access list is enabled on a
particular interface?
A. Router# show ip interface
B. Router> show access-list
C. Router# show ip access-list
D. Router> show interface ip access-list
选 A我考了这个题
43.Cisco ISO allows which key stoke(s) to complete the syntax of a partially entered
command?
A. ctrl+shift+6 then x
B. ctrl+z
C. tab
D. /?
E. shit
选c我考到了这题
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