思科CCNA v3.0最新题库讲解，真正能过人的CCNA题库！【乾颐堂】

乾颐堂

思科CCNA v3.0最新题库讲解，真正能过人的CCNA题库！【乾颐堂】
讲师：乾颐堂周亚军（安德）
时间：9月1日 晚上19:30

Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsula

A: router#show platform

B: routrt#show ip interface brief

C: router#show ip interface s0/2/0

D: router#show interfaces Serial 0/2/0  

What will happen if a private IP address is assigned to a public interface connected to an ISP?

A. Addresses in a private range will be not routed on the Internet backbone.

B. Only the ISP router will have the capability to access the public network.

C. The NAT process will be used to translate this address in a valid IP address.

D. Several automated methods will be necessary on the private network.

E. A conflict of IP addresses happens, because other public routers can use the same range.

Which feature builds a FIB and an adjacency table to expedite packet forwarding?

A: fast switching

B: process switching

C: cut-through

D: Cisco Express Forwarding

X.
Which interface counter can you use to diagnose a duplex mismatch problem
A: CRC errors
B: late collisions
C: deferred
D: giants
E: no carrier
F: runts      答案（A）
Y.
Which protocol advertises a virtual IP address to facilltae transparent failover of a Cisco routing device?
A: ESRP
B: FHRP
C: RSMLT
D: DHCP     答案（B）
Z.
Which logging command can enable administers to correlate syslog messages with millisecond precision?
A: no logging console
B: service timestamps log datetime msec
C: no logging monitor
D: logging host 10.2.0.21
E: logging buffered 4    答案（B）

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