CISCOCCNA认证考试640-810题库原题7
文章来源： 作者： 更新时间：2006-10-10 关键字：CISCOCCNA
Based on the display of the command output, what does [120/3] represent?
A. 120 is the UDP port for forwarding traffic and 3 is the number of hops.
B. 120 is the administrative distance and 3 is the metric for that route.
C. 120 is the bandwidth of the link and 3 is the routing process number.
D. 120 is the value of the update timer and 3 is the number of updates received for that route.
Answer: B
Explanation:
To decide which route to use, IOS uses a concept called Administrative Distance. Administrative distance is a number that denotes how believable an entire routing protocol is on a single router. The lower the number, the better, or more believable the routing protocol.
Route Type Administrative Distance
Connected 0
IGRP 100
RIP 120