违法和不良信息举报 联系客服
免费注册 登录

What is the difference between 1+1 and 1：1 protection switch

题目
单选题
What is the difference between 1+1 and 1：1 protection switching？（）
A

 1+1 is based on APS， while 1：1 is based on IPS.

B

 1：1 is used in SNCP switching， while 1+1 is used in MS-SPRing switching.

C

 1+1 sends signals on Working and Protect paths， while 1：1 sends signals only on Working path.

D

 1+1 sends signals on Working path ONLY， while 1：1 sends signals on both Working and Protect paths.

参考答案和解析
正确答案： A
解析： 暂无解析
如果没有搜索结果或未解决您的问题，请直接 联系老师 获取答案。
相似问题和答案

第1题：

A customer has 2 DS1s to add between adjacent nodes in a UPSR ring. What type of circuit should you recommend?()

A. VT circuits

B. STS circuits

C. VT tunnel circuits

D. 1:1 protection circuits

E. 1:N protection circuits


参考答案：A

第2题：

what is the difference between the HSRP and VRRP？


正确答案: （1）VRRP is an IEEE standard （RFC 2338） for router redundancy； HSRP is a Cisco proprietary protocol.
（2）VRRP allows actual router IP address to be the same with the virtual IP，and if the same the router which get the IP will become Master router of the VRRP group；HSRP do not allow actual router IP address to be the same with the virtual IP.
（3）HSRP uses the multicast address 224.0.0.2 which represent all router in the subnet ， while VRRP uses the multicast address 224.0.0.18；HSRP uses UDP port 1985 while VRRP uses a protocol number of 112.
（4）HSRP may have one active router，one standby router，multiple listening router.While VRRP may have one master router，multiple backup router.
（5）HSRP exchange three kinds of message， hello message，coup message ，resign message. VRRP exchange only one kind of message， advertisement message.
（6）In VRRP，preempt is enable by default.But in HSRP preemt is disable by default.

第3题：

The real difference between plants and animals ____ what they do, and not in what they seem to be.

A: lies in

B: lies with

C: lies down

D: lies up


参考答案：A

第4题：

A customer has 2 E1s to add between far-end nodes in an SNCP ring.  What type of circuit should you recommend？ （）

  • A、 LO-PATH circuits
  • B、 HO-PATH circuits
  • C、 1：1 protection circuits
  • D、 1：N protection circuits
  • E、 LO-TUNNEL tunnel circuits

正确答案:A

第5题：

Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs（）。

  • A、a switch with a trunk link that is configured between the switches
  • B、a router with an IP address on the physical interface that is connected to the switch
  • C、a switch with an access link that is configured between the switches
  • D、a router with subinterfaces configured on the physical interface that is connected to the switch

正确答案:D

第6题：

A customer has 2 DS1s to add between adjacent nodes in a UPSR ring. What type of circuit should you recommend?（）

  • A、VT circuits
  • B、STS circuits
  • C、VT tunnel circuits
  • D、1:1 protection circuits
  • E、1:N protection circuits

正确答案:A

第7题：

What is the correct relative switching priority in a BLSR ring (higher to lower)?（）

  • A、signal fail, signal degrade, manual switch
  • B、signal degrade, signal fail, manual switch
  • C、protection lockout, manual switch, path AIS
  • D、forced switch, manual switch, signal degrade
  • E、protection lockout, manual switch, forced switch

正确答案:A

第8题：

What’s the difference between an interface and abstract class?

(接口与抽象类有什么区别)


正确答案：
 

第9题：

What does the command show | compare rollback 1 display?（）

  • A、the difference between the current candidate configuration and the candidate configuration from one commit ago
  • B、the difference etween the current active configuration and the active configuration from the one commit ago
  • C、the difference between the current active configuration and the active configuration from one commit ago
  • D、the difference between the current candidate configuration and the archived configuration from one commit ago

正确答案:D

第10题：

What is the correct relative switching priority in an MS-SPRing ring （higher to lower）？ （）

  • A、 signal fail， signal degrade， manual switch
  • B、 signal degrade， signal fail， manual switch
  • C、 protection lockout， manual switch， path AIS
  • D、 forced switch， manual switch， signal degrade
  • E、 protection lockout， manual switch， forced switch

正确答案:A

更多相关问题
相关内容