CCNA系列认证CCNA(640-801)单项选择题每日一练(2019.05.06)

单项选择题
By default, how often does a router running IGRP send its complete routing table to its neighbors?（）
A. Every 5 minutes
B. Every 90 seconds
C. Every 60 seconds
D. Every 30 seconds
单项选择题
Which one of the following commands will display the placement and direction of an IP access control list on the interfaces of a router?（）
A. show interface list
B. show ip route
C. show ip interface
D. show ip interface brief
E. show interface
单项选择题
Catalyst switches utilize a special technology to identify and prevent topology loops and ensure that data flows properly through a single network path. What is the name of this technology?（）
A. VTP
B. ISL
C. 802.1Q
D. STP
E. None of the above
单项选择题
A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）
A. The destination is a host on another subnet, so the router will not forward the packet.
B. The destination is a host on the same subnet, so the router will forward the packet.
C. The destination is a broadcast address, so the router will not forward the packet.
D. The destination is a network address, so the router will forward the packet.
单项选择题
The Testking network is implementing dialup services for their remote employees.Testking uses several different Layer 3 protocols on the network. Authentication ofthe users connecting to the network is required for security. Additionally, some employees will be dialing long distance and will need callback support.Which protocol is the best choice for these remote access services?（）
A.802.1
B.Framerelay
C.HDLC
D.PPP
E.SLIP
F.PAP