單項(xiàng)選擇題

Refer to the exhibit. What type of issue does this error log indicate if the IP address in the error log is located off of the Router A WAN?（）

A.HSRP standby configuration error
B.HSRP burned-in address error
C.HSRP secondary address configuration error
D.this is not an HSRP problem，but rather an STP error or router or switch configuration issue

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問答題

【簡(jiǎn)答題】
給了兩段documentation里的描述，問這個(gè)時(shí)候發(fā)哪種類型的ICMP包。
The interface on which the packet comes into the router is the same interface on which the packet gets routed out.
The subnet or network of the source IP address is on the same subnet or network of the next-hop IP address of the routed packet.

答案： ICMP類型5重定向消息。

多項(xiàng)選擇題

Refer to the exhibit. Users from the Engineering VLAN complain that every time Business VLAN users have a network connectivity issue， the Engineering VLAN users usually have problems experiencing slow response or network connectivity problems. After troubleshooting， an unauthorized switch 2 was found. This unauthorized switch has been a regular problem， assuming the root bridge function under the spanning-tree domain and causing the Engineering VLAN to be unstable. Which three of these actions could be suggested to fix the problem？（）

A.Upgrade Spanning Tree Protocol to Rapid Spanning Tree Protocol.
B.Change Business VLAN PCs to switch 1 and switch 4.
C.Force the root bridge to be switch 2， instead.
D.Adjust spanning-tree timers （max-age and forward-delay）.
E.Shut down all unused ports.
F.Use MSTP to separate the Engineering VLAN from the Business VLAN to optimize spanning-tree convergence time within each VLAN.