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
第1题:
()可以给帧加上双重Tag,即在原来Tag的基础上,给帧加上一个新的Tag,从而可以支持多达4096*4096个VLAN,满足城域网对VLAN数量的需求。
第2题:
请讲述Port-VLAN和Tag-VLAN的特点及应用环境。
第3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?()
第4题:
当ONU端口的链路类型为Access,其对上行报文的处理方式为()。
第5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?()
第6题:
The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs? ()
第7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?()
第8题:
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
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
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
Access发往对端设备的以太网帧永远是不带标签的帧
以上说法都不正确
第9题:
to provide service internetworking
to support transparency for Layer 2 frames
as a connection identifier to indicate destination
as a mapping to the DLCI in service internetworking
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
第10题:
The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN (PVLAN )
It is an effective way to achieve VLAN transparency between Provider and enterprise customer bytunneling one ser of VLAN tags inside a second VLAN tag
The Outer.1Q tag represents Service VLAN (PVLAN) and inner.1Q tag represents customer VLAN
QinQ is a way to hide native VLAN which can conflict with Provider native VLAN
第11题:
to provide service internetworking
to support transparency for Layer 2 frames
as a connection identifier to indicate destination
as a mapping to the DLCI in service internetworking
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
第12题:
It tags the data frame with VLAN information and recalculates the CRC value
It encapsulates the data frame with a new header and frame check sequence
It modifies the port index of a data frame to indicate the VLAN
It adds a new header containing the VLAN ID to the data frame
None of the other alternatives apply
第13题:
–How long does the bus?-()About half an hour.
第14题:
The Outer.1Q tag represents customer VLAN ID and inner.1Q tag represents Provider VLAN?()
第15题:
How does the Ethernet Relay Service use the VLAN tag?()
第16题:
以下以太网端口TAG设置,当数据包进入时,会添加默认VLAN标签,出口时又会剥离默认VLAN标签的有()。
第17题:
What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic?()
第18题:
VLAN端口类型有()。
第19题:
VTP
802.1 q
CDP
Skinny Station Protocol
第20题:
by snooping the CoS marking on the incoming frames
by using RTP hello messages between the switch port and the Cisco IP Phone
by using CDP
by using DHCP snooping
by snooping the incoming 802.1Q VLAN tag
第21题:
All subnets in use by HACMP must be in the same VLAN.
All subnets in sue by HACMP must be in a different VLAN.
HACMP does not support multiple subnets when using heartbeating via IP aliasing.
HACMP does not support the use of VLAN.
第22题:
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
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
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
QinQ VLAN主要作为专线应用
第23题:
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 Tag
在接收外部VLAN的帧时,将帧中的VLAN Tag替换成本地VLAN的VLAN Tag
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 TAG
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