A.The MPLS header is 2 bytes，and the EXP field is 3 bits long.
B.The MPLS header is 1 byte，and the EXP field is 3 bits long.
C.The MPLS header is 4 bytes，and the EXP field is 3 bits long.
D.The MPLS header is 3 bytes，and the EXP field is 3 bits long.
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A.RED randomly drops packets before the queue becomes full.
B.RED is always useful，without dependency on flow.
C.RED increases the drop rate as the average queue size increases.
D.RED has a per-flow intelligence.
A.ip rsvp bandwidth 100000 1000
B.ip rsvp bandwidth 100000 1
C.ip rsvp bandwidth 10 1
D.ip rsvp bandwidth 1000000 1000
A.HTTP
B.RTP
C.streaming video
D.BitTorrent
E.POP3
A.all active AVF routers as the first response is used by the client
B.the AVG router，replying with a different AVF MAC address each time
C.a random AVF router，based on a GLBP seed hash key
D.only the AVG router that received the ARP request first
A.It works well with a multihomed environment.
B.It will inspect IP packets that are encapsulated in tunnels， such as GRE，LT2P，or PPTP.
C.uRPF is performed within the CEF switching path.
D.There might be a problem with DHCP as Unicast RPF is blocking packets with a 0.0.0.0 sourceaddress.
最新試題
An expanding company is deploying leased lines between its main site and two remote sites. Thebandwidth of the leased lines is 128kb/s each，terminated on different serial interfaces on the main router.These links are used for combined VOIP and data traffic. The network administrator has implemented a VOIP solution to reduce costs，and has therefore reserved sufficient bandwidth in a low latency queue oneach interface for the VOIP traffic. Users now complain about bad voice quality although no drops areobserved in the low latency queue. What action will likely fix this problem？（）
Which two are differences between IGMPv2 and IGMPv3 reports？（）
All of these are fundamental building blocks of differentiated services Traffic Conditioner Block exceptwhich one？（）
Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree ProtocolIEEE 802.1 D？（）
How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）
Which three options are valid ways to filter routes from a BGP peer？（）
Two routers configured to run BGP have been connected to a firewall， one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer， including the correctBGP session endpoint addresses and the correct BGP session hop-count limit EBGP multihop. What is agood first test to see if BGP will work across the firewall？（）
What is true about Unicast RPF in strict mode？（）
When STP UplinkFast is enabled on a switch utilizing the default bridge priority， what will the new bridgepriority be changed to？（）
On the basis of the network provided in the exhibit， all routers are configured to run EIGRP on all links. If the link between PG-R1 and PG-R2 fails， what is the maximum number of queries PG-R3 will receive for 192.168.1.0/24， assuming that all the packets sent during convergence are transmitted once （there are no dropped or retransmitted packets）？（）