CCNA系列认证CCNA(640-802)章节练习(2019.11.11)

单项选择题
Which port state is introduced by Rapid-PVST?（）
A. learning
B. listening
C. discarding
D. forwarding
单项选择题
The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）
A. Switch1(config)# i nterface fa0 /1 Switch1(config-if)# ip address 192.168.24.3.255.255.255.0
B. Switch1 (config)#interface fa0/1 Switch1 (config-if)# switchport mode trunk
C. Switch 1 (config)# i nterface fa0 /1 Switch1 (config-if)# duplex full Switch1 (config-if)# speed 100
D. Switch1 (config-if)# default-gateway 192.168.24.1
E. Switch1 (config)# line con 0 Switch1(config-line)# password cisco Switch1 (config-line)#login
单项选择题
How many bits are contained in each field of an IPv6 address?（）
A. 24
B. 4
C. 8
D. 16
单项选择题
Users on the 192.168.1.0/24 network must access files located on the Server 1. What route could be configured on router R1 for file requests to reach the server?（）
A.ip route 0.0.0.0 0.0.0.0 s0/0/0
B.ip route 0.0.0.0 0.0.0.0 209.165.200.226
C.ip route 209.165.200.0 255.255.255.0 192.168.1.250
D.ip route 192.168.1.0 255.255.255.0 209.165.100.250
多项选择题
Which statements describe the routing protocol OSPF?（）
A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates.
F. It is simpler to configure than RIP v2.
单项选择题
assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）
A. 2 through 1001
B. 1 through 1001
C. 1 through 1002
D. 2 through 1005
单项选择题
What is the purpose using the traceroute command?（）
A. to map all the devices on a network.
B. to display the current TCP/IP configuration values.
C. to see how a device MAC address is mapped to its IP address.
D. to see the path a packet will take when traveling to a specified destination.
E. to display the MTU values for each router in a specified network path from source to a destination.
多项选择题
Which routing protocols can be used within the enterprise network shown in the diagram?（）
A.RIP v1
B.RIP v2
C.IGRP
D.OSPF
E.BGP
F.EIGRP
多项选择题
Why do large OSPF networks use a hierarchical design?（）
A. to confine network instability to single areas of the network.
B. to reduce the complexity of router configuration
C. to speed up convergence
D. to lower costs by replacing routers with distribution layer switches
E. to decrease latency by increasing bandwidth
F. to reduce routing overhead
单项选择题
Which type of EIGRP route entry describes a feasible successor?（）
A. a primary route,stored in the routing table
B. a backup route,stored in the routing table
C. a backup route,stored in the topology table
D. a primary route,stored in the topology table