多項選擇題What are two advantages of Layer 2 Ethernet switches over hubs?()

A.decreasing the number of collision domains
B.filtering frames based on MAC addresses
C.allowing simultaneous frame transmissions
D.increasing the size of broadcast domains
E.increasing the maximum length of UTP cabling between devices


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1.多項選擇題The network security policy requires that only one host be permitted to attach dynamically to each switch interface. If that policy is violated, the interface should shut down. Which two commands must the network administrator configure on the 2950 Catalyst switch to meet this policy (Choose two.)()。

A.Switch1(config-if)# switchport port-security maximum 1
B.Switch1(config)# mac-address-table secure
C.Switch1(config)# access-list 10 permit ip host
D.Switch1(config-if)# switchport port-security violation shutdown
E.Switch1(config-if)# ip access-group 10

2.單項選擇題

Refer to the exhibit.Based on the exhibited routing table,how will packets from a host within the192.168.10.192/26 LAN be forwarded to 192.168.10.1?()

A.The router will forward packets from R3 to R2 to R1
B.The router will forward packets from R3 to R1
C.The router will forward packets from R3 to R1 to R2
D.The router will forward packets from R3 to R2 to R1 AND from R3 to R1

4.單項選擇題

Refer to the exhibit.Which is the most efficient summarization that R1 can use to advertise its networks toR2?()

A.172.1.4.0/22
B.172.1.0.0/21
C.172.1.0.0/22
D.172.1.4.0/25  172.1.4.128/25  172.1.5.0/24  172.1.6.0/24  172.1.7.0/24
E.172.1.4.0/24  172.1.5.0/24  172.1.6.0/24  172.1.7.0/24

5.多項選擇題Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4?()

A.It establishes a static route to the 172.16.3.0 network.
B.It establishes a static route to the 192.168.2.0 network.
C.It configures the router to send any traffic for an unknown destination to the 172.16.3.0 network.
D.It configures the router to send any traffic for an unknown destination out the interface with the address 192.168.2.4.
E.It uses the default administrative distance.
F.It is a route that would be used last if other routes to the same destination exist.

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