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单选题 Which command would you type to see a concise display of which interfaces are up and which are down?()

A

show interfaces brief

B

show interfaces status

C

show ip interface brief

D

show interfaces terse

单选题 Given the IP address range 192.168.100.0 through 192.168.100.255, which network mask segments these addresses into 16 subnets?()

A

255.255.255.224

B

255.255.255.240

C

255.255.255.248

D

255.255.255.252

多选题 Which two statements are true regarding an Ethernet collision domain?()

A

The likelihood of collisions occurring increases when a switch is used.

B

The likelihood of collisions occurring increases when a hub is used.

C

If a hub is used, the collision domain is limited to each device and the hub.

D

If a switch is used, the collision domain is limited to each device and the switch.

单选题 What information does the help topic command provide?()

A

router’s version and serial number to help open a case with JTAC

B

software documentation describing features and configuration tasks within JUNOS

C

a brief description of commands and their default values

D

a verification of the current configuration on the router

单选题 If the PFE does not have a route to the destination address of a packet, which action will be taken?()

A

The PFE floods the packet out of all interfaces.

B

The PFE drops the packet and sends a destination unreachable notification back to source device.

C

The PFE forwards the packet to the routing engine for further processing.

D

The PFE queues the packet and sends a request for a layer 3 lookup to the routing engine.

单选题 What represents the decimal equivalence of 11000000 10101000 10101100 11110001? ()

A

192.168.184.201

B

192.168.172.241

C

192.170.172.237

D

192.170.184.221

单选题 What is used to view status messages sent to a file named "test" as they are sent?()

A

monitor start test

B

show log test

C

view log test

D

show test realtime

多选题 Which three SONET network elements are used for troubleshooting?()

A

line

B

path

C

circuit

D

section

E

segment

单选题 How do you send static routes to a RIP neighbor?()

A

By default, RIP automatically sends static routes.

B

Configure the static route with a next hop of the RIP neighbor.

C

Configure redistribute static under [edit protocols rip].

D

Apply an export policy within RIP that matches on the routes, and accepts it.

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