H31-611 試験問題を無料オンラインアクセス

Which of the following statements are true about the comparison between OSPF and IS-IS? (Multiple Choice)

• A.OSPF supports P2P/P2MP/NBMA/broadcast networks. IS-IS supports only P2P and broadcast
  networks.
• B.DIS election in IS-IS is simple, preemptive, and can be predicted. DR election in OSPF is unpredictable
  and non-preemptive.
• C.For IS-IS, a router belongs to multiple areas, but in OSPF, a router can belong to only one area.
• D.OSPF runs on the IP layer, and IS-IS runs on the data link layer.

Which of the following statements are true about proxy ARP?

• A.Proxy ARP allows a gateway directly connected to the host to help the destination host to transmit ARP
  packets across VLANs.
• B.Proxy ARP means to buy the permission to use ARP packets from a proxy.
• C.Proxy ARP is used for communication within a VLAN.
• D.Proxy ARP allows a gateway directly connected to the host to use its own MAC address to reply to ARP
  requests in place of the destination host.

In OSPF, which of the following statements is true within a given area (area A)?

• A.The LSA generated by each router is the same.
• B.The route calculated based on each router's shortest path tree is the same.
• C.The shortest path tree calculated based on the LSDB of each router is the same.
• D.The LSDB of area A of each router is the same.

OpenFlow channel establishment and maintenance involves which of the following messages? (Multiple
Choice)

• A.PortStatus message
• B.Collected forwarder interface information
• C.Echo Request message
• D.Features Request message

What kind of packet is used by BGP to transmit version number and AS number information?

• A.Update
• B.Notification
• C.Open
• D.Keepalive