多选题What are two purposes of a forwarding class?（）Ato rewrite the ToS bits in the IP headerBto classify trafficCto identify traffic that should receive commom treatmentDto assign traffic to output queues

题目

多选题

What are two purposes of a forwarding class?（）

to rewrite the ToS bits in the IP header

to classify traffic

to identify traffic that should receive commom treatment

to assign traffic to output queues

参考答案和解析

正确答案： D,A

解析：暂无解析

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相似问题和答案

第1题：

What are three functions associated with JUNOS software class of service?()

A. Log incoming traffic.

B. Classify incoming packets.

C. Manage outbound bandwidth.

D. Manage congestion by intelligently dropping traffic.

E. Classify ATM QoS packets into an equivalent IP CoS environment.

参考答案：B, C, D

第2题：

What are two step needed to define a QoS policy for a traffic class？（）

A、determine a minimum bandwidth guarantee
B、determine interfaces to which to apply policy
C、assign priorities to the class
D、configure access control lists

正确答案:A,C

第3题：

What are two functions associated with JUNOS software class of service?()

A. Manage ingress bandwidth.

B. Mark packets for special handling.

C. Manage congestion by intelligently dropping traffic.

D. Classify Frame Relay QoS packets into an equivalent IP CoS environment.

参考答案：B, C

第4题：

What are two steps needed to define a QoS policy for a traffic class？（）

A、 Determine a minimum bandwidth guarantee.
B、 Determine interfaces to which to apply policy.
C、 Assign priorities to the class.
D、 Configure access control lists.

正确答案:A,C

第5题：

In which two ways can you influence how downstream LSRs treat MPLS traffic？（）

A、Use an EXP rewrite table.
B、Use a DSCP rewrite table.
C、Statically assign a CoS value to an LDP-signaled LSP
D、Statically assign a CoS value to an RSVP-signlated LSP

正确答案:A,D

第6题：

What are the contents of a scheduler?()

A.A scheduler contains parameters that describe how a queue should be serviced.

B.A scheduler contains traffic that is ready to be transmitted.

C.A scheduler contains forwarding classes that allow traffic to be forwarded.

D.A scheduler contains a map between the classification of a packet and its forwarding class.

参考答案：A

第7题：

Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？（）

A、VPN traffic needs to be classified based on the Layer2 header information
B、VPN traffic needs to be classified based on the IP precedence or DSCP
C、VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP address
D、VPN traffic with Authentication Header （AH） needs to preserve the ToS byte

正确答案:C

第8题：

What is the purpose of unicast reverse path forwarding?()

A. to validate packet receipt on interfaces where the traffic should be received

B. to forward packets out the interfaces where the traffic should be received

C. to forward packets out the interfaces where the traffic should be sent

D. to validate packet receipt on interfaces where the traffic should be sent

参考答案：A

第9题：

What are two functions associated with JUNOS software class of service?（）

A、Manage ingress bandwidth.
B、Mark packets for special handling.
C、Manage congestion by intelligently dropping traffic.
D、Classify Frame Relay QoS packets into an equivalent IP CoS environment.

正确答案:B,C

第10题：

On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）

A、IP ToS of 0xEF
B、IP experimental ECN
C、DSCP decimal 5
D、Binary value of 101110

正确答案:D

多选题What are two purposes of a forwarding class?（）Ato rewrite the ToS bits in the IP headerBto classify trafficCto identify traffic that should receive commom treatmentDto assign traffic to output queues

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