Which two subnetworks would be include...

多项选择题Which two subnetworks would be included in the summarized address of 172.31.80.0 /20? （）

A.172.31.17.4 /30
B.172.31.51.16 /30
C.172.31.64.0 /18
D.172.31.80.0 /22
E.172.31.92.0 /22
F.172.31.192.0 /18

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1.单项选择题Which command can you use to manually assign a static IPV6 address to a router interface？（）

A.ipv6 address PREFIX_1：：1/64
B.ipv6 autoconfig 2001：db8：2222：7272：：72/64
C.ipv6 autoconfig
D.ipv6 address 2001：db8：2222：7272：：72/64

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2.多项选择题For what two purposes does the Ethernet protocol use physical addresses? （）

A.Network A - 172.16.3.48/26
B.Network A - 172.16.3.128/25
C.Network A - 172.16.3.192/26
D.Link A - 172.16.3.0/30
E.Link A - 172.16.3.40/30
F.Link A - 172.16.3.112/30

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3.多项选择题 What can be determined from the line of show ip route output shown in the exhibit?（）

A.The next routing update can be expected in 35 seconds.
B.The IP address 10.10.10.6 is configured on S0/1.
C.The IP address 10.10.10.8 is configured on S0/1.
D.This route is using the default administrative distance.
E.The 10.10.10.8 network is two hops away from this router.

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4.单项选择题使配置的访问列表应用到接口上的命令是什么？（）

A.access-group
B.access-list
C.acl
D.firewall packet-filter xxxx inbound/outbound

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5.多项选择题Which destination addresses will be used by Host A to send data to Host C?（）

A.the IP address of Switch 1
B.the MAC address of Switch 1
C.the IP address of Host C
D.the MAC address of Host C
E.the IP address of the router's E0 interface
F.the MAC address of the router's E0 interface

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6.单项选择题在一个接口配置x25 map ip 102.112.43.125 x121-address 12345命令，其中102.112.43.125和123456分别是（）。

A.对端的IP地址和对端的x.121地址
B.对端的IP地址和本接口的x.121地址
C.本接口的IP地址和对端的x.121地址
D.本接口的IP地址和本接口的x.121地址

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7.单项选择题Why will as witch never learn a broadcast address？（）

A.Broadcast frames are never sent to swiches.
B.Broadcast addresses use an incorrect format for the switching table.
C.A broadcast address will never be the source address of a frame.
D.Broadcasts only use network layer addressing.
E.A broadcast frame is never forwarded by a switch.

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8.单项选择题Which command shows if an access list is assigned to an interface?（）

A.show ip interface [interface] access-lists
B.show ip access-lists interface [interface]
C.show ip interface [interface]
D.show ip access-lists [interface]

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9.多项选择题x.25协议包含三层（）。

A.分组层
B.数据链路层
C.物理层
D.传输层
E.网络层

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10.多项选择题Which of the following are types of flow control?（）

A.buffering
B.cut-through
C.windowing
D.congestion avoidance
E.load balancing

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