改变MS功率的命令和改变TA的命令在每一个下行的SACCH信息块所带的()传送给MS。A、第一层的报头(Layer 1 Header)B、第二层的报头(Layer 2 Header)C、第三层的报头(Layer 3 Header)D、第四层的报头(Layer 4 Header)

题目

改变MS功率的命令和改变TA的命令在每一个下行的SACCH信息块所带的()传送给MS。

  • A、第一层的报头(Layer 1 Header)
  • B、第二层的报头(Layer 2 Header)
  • C、第三层的报头(Layer 3 Header)
  • D、第四层的报头(Layer 4 Header)
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:

On which destination port in the Layer 4 header does BGP listen?()

A. UDP port 169

B. TCP port 169

C. UDP port 179

D. TCP port 179


参考答案:D

第2题:

Which OSI layer header contains the address of a destination host that is another network?()

A. application

B. presentation

C. session

D. transport

E. network

F. data link

G. physical


参考答案:E

第3题:

INTERNET中传输的数据单元称为()。Datagram通过网络传输的数据的基本单元,包含一个报头(header)和数据本身,其中报头描述了数据的目的地以及和其它数据之间的关系。

A.数据帧

B.数据报

C.报文

D.数据块


参考答案:B

第4题:

In a frame ,the MPLS label is imposed().

  • A、After the Layer3 header and before Layer2 header
  • B、After the Layer2 header and before Layer3 header
  • C、Within the Layer 3 header
  • D、Before the layer 2 header

正确答案:B

第5题:

Which three statements about classification marking of traffic at Layer 2 are true? ()

  • A、a Frame Relay header includes a 1-bit discard eligible (DE) bit to provide the class of service (CoS)
  • B、an ATM header includes a 1-bit DE field to provide the CoS
  • C、an MPLS EXP field is inserted in the Layer 3 IP precedence field to identify the CoS
  • D、the CoS field only exists inside Ethernet frames when 802.1Q or Inter-Switch Link (ISL) trunking is used
  • E、in the IEEE 802.1p standard, three bits are used to identify the user priority bits for the CoS
  • F、in the IEEE 802.1q standard, six bits are used to identify the user priority bits for the CoS

正确答案:A,D,E

第6题:

Routers perform the decision process that selects what path a packet takes. These ( ) layer devices participate it the collection and distribution of network-layer information, and perform Layer 3 switching based on the contents of the network layer ( ) of each packet. You can connect the routers directly by point-to-point ( ) or local-area networks, or you can connect them by LAN or WAN switches. These Layer 2 switches unfortunately do not have the capability to hold Layer 3 ( ) information or to select the path taken by a packet through analysis of its Layer 3 destination address. Thus, Layer 2 switches be involved in the Layer 3 packet ( ) decision process.

A.application B. network C.physical D.link A.header B.connection C.protocol D.data A.medium B.links C.switches D.carriers A.network B.links C.protocol D.routing A.switching B.processing C.forwarding D.connecting


正确答案:B,A,B,D,C

第7题:

Which OSI layer header contains the address of a destination host that is another network?()

  • A、application
  • B、presentation
  • C、session
  • D、transport
  • E、network
  • F、data link
  • G、physical

正确答案:E

第8题:

In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?()

A. single ATM header

B. single Ethernet header

C. ATM header followed by a PPP header

D. ATM header followed by an Ethernet header


参考答案:D

第9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10题:

添加图层蒙版的方法是()。

  • A、执行“Layer/DisableLayers”命令
  • B、执行“Layer/EnableLayersMask”命令
  • C、执行“Layer/AddLayerMask”命令
  • D、执行“Layer/RemoveLayerMask”命令

正确答案:C

更多相关问题