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单选题An IS-IS router is adjacent to and passing traffic with a neighbor. You perform a show is interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level（s） is enabled on these interfaces？（）A Level 1 onlyB L

题目
单选题
An IS-IS router is adjacent to and passing traffic with a neighbor. You perform a show is interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level（s） is enabled on these interfaces？（）
A

Level 1 only

B

Level 2 only

C

Level 1 and Level 2

D

Level 3 only

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相似问题和答案

第1题：

Which command will allow you to quickly determine the administrative status of all interfaces on a Junos device?()

A. show interfaces status

B. show interfaces summary

C. show interfaces terse

D. show interfaces admin


参考答案：C

第2题：

Which command would you use to view interface usage details in real time?()

A. show interfaces terse

B. show interfaces extensive

C. monitor interface traffic

D. monitor traffic interface


参考答案：C

第3题：

An IS-IS router is adjacent to and passing traffic with a neighbor. You perform a show isis interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level(s) is enabled on these interfaces?（）

A. Level 1 only

B. Level 2 only

C. Level 1 and Level 2

D. Level 3 only


参考答案：C

第4题：

How would you characterize the source and type in a denial of service attack on a router？（）

  • A、By perfornubg a show ip interface to see the type and source of the attack based upon the access-listmatches
  • B、By performing a show interface to see the transmitted load "txload" and receive load "rxload" ；if the interface utilization is not maxed out ，there is no attack underway
  • C、By setting up an access-list to permit all ICMP，TCP，and UDP traffic with the log or log-input commands，then use the show access-list and show log commands to determine the type and sourceof attack
  • D、By applying an access-list to all incoming and outgoing interfaces，turning off route-cache on all interfaces，then，when telnetting into the router perform a debug IP packet detail

正确答案:C

第5题：

The router SIS-R has been configured in a CIS network. As a network administrator, you were required to enable MPLS on that router.Which of the following description is making sense on the basis of the output information?（）

A. CEF switching is only needed to forward labeled packets.

B. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.

C. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.

D. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.


参考答案：D

第6题：

Which CLI command displays the IS－IS level used by each interface?()

A. show clns neighbor

B. show isis neighbor

C. show clns interface

D. show isis interface


参考答案：C

第7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


参考答案：D

第8题：

Which operational command would you use to quickly verify the state of all interfaces?()

A. show interfaces terse

B. show interfaces

C. show configuration interfaces

D. show interface status


参考答案：A

第9题：

When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

A.show ip access-list

B.show access-list

C.list ip interface

D.show interface

E.show ip interface


参考答案：E

第10题：

An IS-IS router is adjacent to and passing traffic with a neighbor. You perform a show isis interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level(s) is enabled on these interfaces?（）

  • A、Level 1 only
  • B、Level 2 only
  • C、Level 1 and Level 2
  • D、Level 3 only

正确答案:C

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