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多选题Which three statements about classification marking of traffic at Layer 2 are true？ （）Aa Frame Relay header includes a 1-bit discard eligible （DE） bit to provide the class of service （CoS）Ban ATM header includes a 1-bit DE field to provide the CoSCan M
题目
a Frame Relay header includes a 1-bit discard eligible （DE） bit to provide the class of service （CoS）
an ATM header includes a 1-bit DE field to provide the CoS
an MPLS EXP field is inserted in the Layer 3 IP precedence field to identify the CoS
the CoS field only exists inside Ethernet frames when 802.1Q or Inter-Switch Link （ISL） trunking is used
in the IEEE 802.1p standard， three bits are used to identify the user priority bits for the CoS
in the IEEE 802.1q standard， six bits are used to identify the user priority bits for the CoS
参考答案和解析
相似问题和答案
第1题：
A. one-rate rate limiters
B. two-rate rate limiters
C. two-rate rate limiters is the default
D. one-rate rate limiters is the default
E. there is no default it must be configured
第2题：
Which two QoS classification and marking statements are true？ （）
- A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.
- B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field.
- C、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.
- D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.
- E、 The 802.1Q standard uses a three bit field referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
正确答案:B,E
第3题：
15 Which of the following statements about intangible assets are correct?
1 If certain criteria are met, research expenditure must be recognised as an intangible asset.
2 Goodwill may not be revalued upwards.
3 Internally generated goodwill should not be capitalised.
A 2 and 3 only
B 1 and 3 only
C 1 and 2 only
D All three statements are correct
第4题：
Which three statements about Label-Switched Paths （LSPs） are true？ （）
- A、 LSPs are bidirectional.
- B、 LSPs are unidirectional.
- C、 LSPs can be signaled by CAC.
- D、 LSPs can be configured explicitly.
- E、 LSPs can be configured dynamically.
正确答案:B,D,E
第5题：
Which two QoS classification and marking statements are true？（）
- A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.
- B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field
- C、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.
- D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.
- E、 The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
正确答案:B,E
第6题：
Which three statements are correct about RIP version 2 (Choose three.)（）。
- A、It has the same maximum hop count as version 1
- B、It uses broadcasts for its routing updates
- C、It is a classless routing protocol
- D、It has a lower default administrative distance than RIP version 1
- E、It supports authentication
- F、It does not send the subnet mask in updates
正确答案:A,C,E
第7题：
Which three QoS mechanisms can be configured to improve VoIP quality on a converged network？（）
- A、The use of a queuing method that will give VoIP traffic strict priority over other traffic
- B、The use of RTP header compression for the VoIP traffic.
- C、The proper classification and marking of the traffic as close to the source as possible
- D、The use of 802.1QinQ trunking for VoIP traffic
- E、The use of WRED for the VoIP traffic
正确答案:A,C,E
第8题：
19 Which of the following statements about intangible assets in company financial statements are correct according
to international accounting standards?
1 Internally generated goodwill should not be capitalised.
2 Purchased goodwill should normally be amortised through the income statement.
3 Development expenditure must be capitalised if certain conditions are met.
A 1 and 3 only
B 1 and 2 only
C 2 and 3 only
D All three statements are correct
第9题：
Which of these statements is true about ssids configured in cisco adu？（）
- A、ssids are not case-sensitive.
- B、ssids must be listed in the same order in the adu as they are in the access point.
- C、a maximum of three ssids may be configured.
- D、ssids may have a maximum of 16 characters.
正确答案:C
第10题：
Which three statements are true about terms in a policy?（）
- A、The order of the terms in a policy is irrelevant
- B、The action is specified in a then statement
- C、Ters are optional in a policy
- D、The match condition can be identified with a from statement
- E、Every policy must contain at least one term
正确答案:B,D,E