juniper认证考试

Which element occurs first during the first-packet-path processing?（）A、destination NATB、forwarding lookupC、route lookupD、SCREEN options

题目

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

  • A、destination NAT
  • B、forwarding lookup
  • C、route lookup
  • D、SCREEN options
参考答案和解析
正确答案:D
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相似问题和答案

第1题：

Regarding fast path processing, when does the system perform the policy check?()

A. The policy is determined after the SCREEN options check.

B. The policy is determined only during the first packet path, not during fast path.

C. The policy is determined after the zone check.

D. The policy is determined after the SYN TCP flag.


参考答案：B

第2题：

Which two statements about Junos software packet handling are correct?()(Choose two.)

A. The Junos OS applies service ALGs only for the first packet of a flow.

B. The Junos OS uses fast-path processing only for the first packet of a flow.

C. The Junos OS performs policy lookup only for the first packet of a flow.

D. The Junos OS applies SCREEN options for both first and consecutive packets of a flow.


参考答案：C, D

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：

Which tool allows a LAN client to determine which router should be the first hop to a particular remote destination, allowing simplified client configuration and processing without creating a single point of failure?（）

A. Proxy ARP

B. IRDP

C. Dynamic Routing Protocol

D. VRRP


参考答案：D

第5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6题：

Which two functions of the Junos OS are handled by the data plane? ()(Choose two.)

A. NAT

B. OSPF

C. SNMP

D. SCREEN options


参考答案：A, D

第7题：

The SRX device receives a packet and determines that it does not match an existing session.After SCREEN options are evaluated, what is evaluated next?()

A. source NAT

B. destination NAT

C. route lookup

D. zone lookup


参考答案：B

第8题：

Which two statements about the use of SCREEN options are correct? ()(Choose two.)

A. SCREEN options offer protection against various attacks

B. SCREEN options are deployed prior to route and policy processing in first path packet processing

C. SCREEN options are deployed at the ingress and egress sides of a packet flow

D. SCREEN options, you must take special care to protect OSPF


参考答案：A, B

第9题：

Which command displays the egress interfaces selected on the PFE for destination prefixes?()

A. show route forwarding-table

B. show route table

C. show route table extensive

D. show pfefwdd


参考答案：A

第10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

正确答案:B

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