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How does ERS use the VLAN tag?（）
- A、to provide service internetworking
- B、to support transparency for Layer 2 frames
- C、as a connection identifier to indicate destination
- D、as a mapping to the DLCI in service internetworking
- E、to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
参考答案
更多 “How does ERS use the VLAN tag?（）A、to provide service internetworkingB、to support transparency for Layer 2 framesC、as a connection identifier to indicate destinationD、as a mapping to the DLCI in service internetworkingE、to provide a trunk by which all VLANs can navigate from one site to one or multiple sites” 相关考题
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What does the text mainly tell us?A. Tips on an important social skill. B. Importance of attending parties.C. How to make use of associations. D. How to recite and repeat names.
考题
How does ERS use the VLAN tag?()
A. to provide service internetworkingB. to support transparency for Layer 2 framesC. as a connection identifier to indicate destinationD. as a mapping to the DLCI in service internetworkingE. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
考题
VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A. provide service internetworkingB. support transparency for Layer 2 framesC. indicate destination as a connection identifierD. map to the DLCI in service internetworking
考题
以下关于hybrid接口的说法正确的是（ ）A.当接收不带Tag报文时，先打上缺省的VLAN ID，当缺省VLAN ID在允许通过的列表中，接收该报文
B.当接收不带Tag报文时，先检查缺省VLAN ID在允许通过的列表中，再打上缺省的VLAN ID
C.当接收带Tag报文时，先剥离tag，再检查tag是否在允许通过的列表，若是，则接收，否则丢弃
D.当接收带Tag报文时，先检查tag是否在允许通过的列表，若是，则剥离tag，再接收，否则丢弃
考题
The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN？（）A、The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN （PVLAN ）B、It is an effective way to achieve VLAN transparency between Provider and enterprise customer bytunneling one ser of VLAN tags inside a second VLAN tagC、The Outer.1Q tag represents Service VLAN （PVLAN） and inner.1Q tag represents customer VLAND、QinQ is a way to hide native VLAN which can conflict with Provider native VLAN
考题
When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）A、by snooping the CoS marking on the incoming framesB、by using RTP hello messages between the switch port and the Cisco IP PhoneC、by using CDPD、by using DHCP snoopingE、by snooping the incoming 802.1Q VLAN tag
考题
How does the Ethernet Relay Service use the VLAN tag？（）A、 to provide service internetworkingB、 to support transparency for Layer 2 framesC、 as a connection identifier to indicate destinationD、 as a mapping to the DLCI in service internetworkingE、 to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
考题
当ONU端口的链路类型为Access，其对上行报文的处理方式为（）。A、只允许不带tag的报文通过，并为报文添加缺省VLAN的tagB、仅允许带有缺省VLAN tag的报文通过，并去TagC、对于收到的不带Tag的报文，添加缺省VLAN tag，对于收到的带tag的报文，直接转发D、仅允许带tag的报文通过
考题
VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A、provide service internetworkingB、support transparency for Layer 2 framesC、indicate destination as a connection identifierD、map to the DLCI in service internetworking
考题
What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）A、VTPB、802.1 qC、CDPD、Skinny Station Protocol
考题
The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs？ （）A、 It tags the data frame with VLAN information and recalculates the CRC valueB、 It encapsulates the data frame with a new header and frame check sequenceC、 It modifies the port index of a data frame to indicate the VLAND、 It adds a new header containing the VLAN ID to the data frameE、 None of the other alternatives apply
考题
Company.com is planning for an HACMP cluster and wants to know more about the network requirements. The plan is to use IPAT via IP aliasing and heartbeating via IP aliasing to preserve the corporate IP addresses. Currently the customer uses a separate VLAN for each individual subnet. Which statement best describes how HACMP co-exists with VLAN’s in this configuration？（） A、 All subnets in use by HACMP must be in the same VLAN.B、 All subnets in sue by HACMP must be in a different VLAN.C、 HACMP does not support multiple subnets when using heartbeating via IP aliasing.D、 HACMP does not support the use of VLAN.
考题
单选题What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）A
VTPB
802.1 qC
CDPD
Skinny Station Protocol
考题
多选题关于Access端口上的PVID，说法正确的是（）A当接口接收到不带VLAN Tag的报文时，将该报文加上VLAN Tag标记，并将Tag中的VID字段的值设置为接口所属的缺省VLAN编号B当接口接收到带VLAN Tag的报文时，如果该报文的VLAN ID与接口缺省的VLAN ID相同，将转发该报文；如果该报文的VLAN ID与接口缺省的VLAN ID不相同，则丢弃该报文C当接口发送带有VLAN Tag的报文时，如果该报文的VLAN ID与接口缺省的VLAN ID相同，则系统将去掉报文的VLAN Tag，然后再发送该报文DAccess发往对端设备的以太网帧永远是不带标签的帧E以上说法都不正确
考题
单选题When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network, how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port? （）A
by snooping the CoS marking on the incoming framesB
by using RTP hello messages between the switch port and the Cisco IP PhoneC
by using CDPD
by using DHCP snoopingE
by snooping the incoming 802.1Q VLAN tag
考题
单选题How does the Ethernet Relay Service use the VLAN tag？（）A
to provide service internetworkingB
to support transparency for Layer 2 framesC
as a connection identifier to indicate destinationD
as a mapping to the DLCI in service internetworkingE
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
考题
单选题Company.com is planning for an HACMP cluster and wants to know more about the network requirements. The plan is to use IPAT via IP aliasing and heartbeating via IP aliasing to preserve the corporate IP addresses. Currently the customer uses a separate VLAN for each individual subnet. Which statement best describes how HACMP co-exists with VLAN’s in this configuration？（）A
All subnets in use by HACMP must be in the same VLAN.B
All subnets in sue by HACMP must be in a different VLAN.C
HACMP does not support multiple subnets when using heartbeating via IP aliasing.D
HACMP does not support the use of VLAN.
考题
单选题The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN？（）A
The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN （PVLAN ）B
It is an effective way to achieve VLAN transparency between Provider and enterprise customer bytunneling one ser of VLAN tags inside a second VLAN tagC
The Outer.1Q tag represents Service VLAN （PVLAN） and inner.1Q tag represents customer VLAND
QinQ is a way to hide native VLAN which can conflict with Provider native VLAN
考题
单选题以下关于QinQ VLAN说法不正确的是（）A
QinQ VLAN是通过提供一种简单的二层隧道来确保该企业内部VLAN Tag能够正确的到达远端网络B
QinQ VLAN特性主要是为了满足让公网VLAN Tag和业务能直接透明传输到对端的功能C
报文在骨干网中根据公网VLAN Tag传输，大大节省了公网VLAN ID资源D
QinQ VLAN主要作为专线应用
考题
单选题How does ERS use the VLAN tag?（）A
to provide service internetworkingB
to support transparency for Layer 2 framesC
as a connection identifier to indicate destinationD
as a mapping to the DLCI in service internetworkingE
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
考题
多选题如下关于VLAN Mapping的说法不正确的是（）A端口在向外发送本地VLAN的帧时，将帧中的VLAN Tag替换成外部VLAN的VLAN TagB在接收外部VLAN的帧时，将帧中的VLAN Tag替换成本地VLAN的VLAN TagC在入端口接受外部VLAN的帧时，不会修改VLAN TAG，只在本端口对外发送时，修改成外部的VLAN TAGD端口只对收到外部VLAN的帧修改VLAN TAG，在本端口对外发送时不需要修改VLAN TAG
考题
单选题The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs？ （）A
It tags the data frame with VLAN information and recalculates the CRC valueB
It encapsulates the data frame with a new header and frame check sequenceC
It modifies the port index of a data frame to indicate the VLAND
It adds a new header containing the VLAN ID to the data frameE
None of the other alternatives apply
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