There are the following topology diagrams, the following statements are correct:

• A.There is no route with the destination network segment 10.0.3.3/32 on R1
• B.There is no route with the destination network segment 10.0.2.2/32 on R1
• C.There is a route with the destination network segment 10.0.3.3/32 on R1
• D.There is a route with destination network segment 10.0.2.2/32 on R1

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The multicast IP address is 239.130.130.1, the corresponding MAC address is:

• A.00-00-5E-02-82-01
• B.01-00-5E-02-82-01
• C.00-00 -5E-82-82-01
• D.01-00-5E-82-82-01

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Which of the following descriptions about the process of sending and receiving data frames in switch interface Access mode is correct?

• A.In Access mode, the VLAN tag of the data frame will be stripped off when sending.
• B.Only data frames without labels are received in Access mode.
• C.When the data frame enters the switch interface, the switch will learn the destination MAC address in the data frame.
• D.In Access mode, the data frame with the label is directly discarded when it is received.

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four routers running IS-IS And the adjacency relationship has been established, the area number and router level are marked in the figure, in R1 Configure routing penetration on the device, thenR4 arrive 10.0.2.2/32 ofCcost What is the value? (Singleselect)

• A.30
• B.50
• C.40
• D.80

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As shown in the following topology diagram, all interfaces of the router in the figure enable the ISIS protocol.
The following statements are correct (multiple choices))

• A.if the Ethernet0/0/0 interface of R1 is down, then R2 will become the master device
• B.if the Ethernet0/0/1 interface of R1 is down, then R2 will become the master device
• C.if the GE0/0/0 interface of R3 is down, then R2 will become the master device
• D.if the Ethernet0/0/0 interface of R3 is down, then R2 will become the master device

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