單項(xiàng)選擇題Prior to 802.1w， Cisco implemented a number of proprietary enhancements to 802.1D to improve convergence in a Layer 2 network. Which statement is correct？（）

A.Only UplinkFast and BackboneFast are specified in 802.1w； PortFast must be manually configured.
B.Only PortFast is specified in 802.1w； UplinkFast and BackboneFast must be manually configured.
C.None of the proprietary Cisco enhancements are specified in 802.1w.
D.PortFast， UplinkFast， and BackboneFast are specified in 802.1w.


您可能感興趣的試卷

你可能感興趣的試題

2.單項(xiàng)選擇題You work as a network engineer for the company， you want to configure two BGP speakers to form an EBGP session across a firewall. On the engineer’s network， the firewall always permits TCP sessions that are initiated from the inside network （the network attached to the inside interface of the firewall）. What prerequisite is there for enabling BGP to run on this network？（）

A.EBGP multihop will need to be configured for this to work.
B.This should work with normal BGP peering， with no additional configuration on the BGP speakers or the firewall.
C.The BGP protocol port must be opened on the firewall
D.There is no way to make BGP work across a firewall.

3.單項(xiàng)選擇題Multi Protocol Label Switching （MPLS） is a data-carrying mechanism that belongs to the family of packet-switched networks. For an MPLS label， if the stack bit is set to1， which option is true？（）

A.The stack bit will only be used when LDP is the label distribution protocol
B.The label is the last entry in the label stack.
C.The stack bit is for Cisco implementations exclusively and will only be used when TDP is the label distribution protocol.
D.The stack bit is reserved for future use.

5.單項(xiàng)選擇題You are configuring an 802.1Q trunk between a Layer 2 switch and a firewall. You read in the documentation that the best way to set up a trunk is to set the port as dynamic desirable. The trunk is not coming up. Which one of these options would be a valid explanation？ （）

A.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode ON
B.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode to OFF
C.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode asauto.
D.The firewall does not support DTP. You should set the switchport trunk mode to ON

最新試題

Phase I and Phase II DMVPN differ in terms of which of these characteristics？（）

題型：?jiǎn)雾?xiàng)選擇題

Which statement best describes OSPF external LSAs （type 5）？（）

題型：?jiǎn)雾?xiàng)選擇題

Which statement is correct about an OSPF sham-link？（）

題型：?jiǎn)雾?xiàng)選擇題

For the following protocols， which one provides a mechanism to transparently intercept and redirect CIFS traffic from a client to a local Cisco Wida Area Application engine？（）

題型：?jiǎn)雾?xiàng)選擇題

Which router is doing LSA type 7 to type 5 translation，and why？（）

題型：?jiǎn)雾?xiàng)選擇題

You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality， you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN， you have also deployed QoS. Users， however， keep complaining about bad voice quality， and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem？（）

題型：?jiǎn)雾?xiàng)選擇題

Which three are needed to run VRF lite for IPv6 on a router？ （）

題型：多項(xiàng)選擇題

Which two attributes need to match for two switches to become members of the same MST region？  （）

題型：多項(xiàng)選擇題

Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）

題型：?jiǎn)雾?xiàng)選擇題

What is the command to configure RSVP to reserve up to one-tenth of a Gigabit link， but only allow each individual flow to use 1 MB/s？（）

題型：?jiǎn)雾?xiàng)選擇題