juniper认证考试

Why is IPv6 packet processing more effective than IPv4 packet processing?（）A、fixed header sizeB、smaller header sizeC、fewer header fieldsD、variable header size

题目

Why is IPv6 packet processing more effective than IPv4 packet processing?（）

  • A、fixed header size
  • B、smaller header size
  • C、fewer header fields
  • D、variable header size
参考答案和解析
正确答案:A
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相似问题和答案

第1题：

Which two firewall filter actions will terminate the processing and evaluation of a packet?()

A. permit

B. accept

C. deny

D. discard


参考答案：B, D

第2题：

Why is IPv6 packet processing more effective than IPv4 packet processing?()

A. fixed header size

B. smaller header size

C. fewer header fields

D. variable header size


参考答案：A

第3题：

Which element occurs first during the first－packet－path processing?()

A. destination NAT

B. forwarding lookup

C. route lookup

D. SCREEN options


参考答案：D

第4题：

What best describes processing delay？（）

  • A、the time required from receipt of the incoming frame， until the frame/packet has been queued for transmission
  • B、the time taken for a single packet to traverse the physical medium from one end to the other
  • C、the time taken to place a frame on the physical medium for transport
  • D、the time spent for a packet to reside in the output queue of a router

正确答案:A

第5题：

How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）

  • A、It will fragment the packet at Layer 2.
  • B、It will fragment the packet at Layer 3.
  • C、It will drop the packet and send an ICMPv6 message "packet too big" back to the source.
  • D、It will drop the packet.

正确答案:C

第6题：

What are two ways that packet fragmentation is handled differently between IPv6 and IPv4?()

A. End hosts determine the path MTU for IPv6.

B. End hosts determine the path MTU for IPv4.

C. Packet fragmentation occurs at intermediate nodes for IPv4.

D. Packet fragmentation occurs at intermediate nodes for IPv6.


参考答案：A, C

第7题：

vPath is a critical component in the VNS architecture. Which two are functions of vPath？（）

  • A、 intelligent traffic steering to the VSG
  • B、 offloading the processing from the VSG to the VEM
  • C、 intelligent traffic steering to the VNMC
  • D、 offloading the processing from the VSG to the flow manager
  • E、 deep packet inspection

正确答案:A,B

第8题：

Which ERX Edge Router component is responsible for all packet processing and packet forwarding?()

A.I/O adapter

B.line module

C.shared memory fabric

D.switch route processor


参考答案：B

第9题：

why do you configure GRE in IPV6？


正确答案: （1）use GRE tunnels to carry ipv6 traffic over ipv4 network.
（2）The primary use of GRE tunnels is for stable connections that require regular secure communication between two edge routers or between an edge router and an end system.

第10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.

正确答案:B

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