OSPF and IS-IS are similar in many ways. The OSPF backbone area is indicated by area 0. Which of the following is used to indicate the IS-IS backbone area?
A. Area 0
B. Area 1
C. Area 49
D. No specific backbone area
Which of the following factors does not affect the performance of the SDN network?
A. Network congestion
B. Routing loop
C. Access loop
D. Access control list
E. Non-optional route
From the perspective of the entire Internet, which of the following methods can be effectively reduce the size of the routing tables on an SDN network?
A. Increase the frequency of updating dynamic routes
B. Divide VLANs
C. Summarize routes
During SDN network fault locating, which of the following commands can be used to collect basic runtime information for datacom devices?
A. display version
B. display diagnostic-information
C. display log
D. display current-configuration
Which of the following statements is true about proxy ARP?
A. Proxy ARP allows a gateway directly connected to the host to use its own MAC address to reply to ARP requests in place of destination host.
B. Proxy ARP allows a gateway directly connected to the host to help the destination host to transmit ARP packets across VLANs.
C. Proxy ARP is used for communication within a VLAN.
D. Proxy ARP means to buy the permission to use ARP packets from a proxy.
When a host shifts from one network to another, which of the following statements is true?
A. You must change its IP address and MAC address.
B. You must change its IP address, but not its MAC address.
C. You must change its MAC address, but not its IP address.
D. The MAC address and IP address do not need to be changed.
Currently, the packet forwarding efficiency of Layer 3 switches is greatly improved. Which of the following may be the cause?
A. By using higher-performance hardware
B. By using the "routing once and switching multiple times" forwarding technology
C. By using packet-to-packet forwarding technology
D. By dividing the VLAN to effectively suppress broadcast storms and save bandwidth and other system resource.
A trunk port on a switch allows packets from VLANs 3, 4, and 5 to pass, but only packets from VLANs 3 and 4 have tags. Which of the following may be the reason why packets from VLAN 5 do not have tags?
A. The port PVID is 5.
B. The port PVID is 3 and 4.
C. During port configuration, the port trunk permit vlan 3 4 command is configured.
D. GVRP is enabled on this port.
Which of the following protocols is defined by the network layer of the OSI protocol suite?
A. ES-ES
B. RIP
C. OSPF
D. IS-IS
In the SDN RR+ solution, the AC can provide which of the following functions? (Choose all that apply.)
A. Calculates optimal paths globally based on multiple constraints.
B. Pre-defines BGP routing policies.
C. Generates BGP routes/policies and applies them to devices.
D. Manages topology and BGP relationships
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