CMS专题
多选题If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）AA received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.BAn IP destination exists in the IP forwar
题目
A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.
An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.
There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.
A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.
A received labeled IP packet is forwarded based upon both the label and the IP address.
A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.
参考答案和解析
相似问题和答案
第1题：
A.A
B.B
C.C
D.D
第2题：
A.A
B.B
C.C
D.D
第3题：
A.1
B.100
C.2048
D.4096
第4题：
A.The Router1 WAN port is configured as a trunking port.
B.The Router1 port connected to Switch1 is configured using subinterfaces.
C.The Router1 port connected to Switch1 is configured as 10 Mbps.
D.The Switch1 port connected to Router1 is configured as a trunking port.
E.The Switch1 port connected to Host B is configured as an access port.
F.The Switch1 port connected to Hub1 is configured as full duplex.
第5题：
The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）
A. Switch1(config)# i nterface fa0 /1 Switch1(config-if)# ip address 192.168.24.3.255.255.255.0
B. Switch1 (config)#interface fa0/1 Switch1 (config-if)# switchport mode trunk
C. Switch 1 (config)# i nterface fa0 /1 Switch1 (config-if)# duplex full Switch1 (config-if)# speed 100
D. Switch1 (config-if)# default-gateway 192.168.24.1
E. Switch1 (config)# line con 0 Switch1(config-line)# password cisco Switch1 (config-line)#login
第6题：
A.A
B.B
C.C
D.D
第7题：
The router SIS-R has been configured in a CIS network. As a network administrator, you were required to enable MPLS on that router.Which of the following description is making sense on the basis of the output information?（）
A. CEF switching is only needed to forward labeled packets.
B. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.
C. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.
D. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.
第8题：
A. EXP bits
B. VPI / VCI
C. shim header
D. SNAP header
第9题：
A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）
A. one
B. three
C. two
D. zero
第10题：
Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs（）。
- A、a switch with a trunk link that is configured between the switches
- B、a router with an IP address on the physical interface that is connected to the switch
- C、a switch with an access link that is configured between the switches
- D、a router with subinterfaces configured on the physical interface that is connected to the switch
正确答案:D