H12-224

H12-224 practice questions, page 11 of 14, with answer review and explanations.

Question 51

A broadcast and an NBMA network, each having two or more routers, must both have a DR and a BDR.

  1. True
  2. False

Question 52

ABRs advertise link status information about connected non-backbone areas to the backbone area. The backbone area then advertises the routing information to other non-backbone areas. Link status information about the backbone area cannot be advertised to non-backbone areas.

  1. True
  2. False

Question 53

OSPF directly runs over the IP protocol. Its IP protocol number is 89.

  1. True
  2. False

Question 54

Which of the following statements about link aggregation are true? (Choose three.)

  1. Link aggregation binds a group of physical interfaces together as a logical interface to increase the bandwidth and reliability.
  2. Link aggregation complies with IEEE 802.3az.
  3. The logical link formed by bundling multiple physical links together is called a link aggregation group (LAG) or a trunk.
  4. Active and inactive interfaces exist in link aggregation. Active interfaces forward data, whereas inactive interfaces do not.

Question 55

When links are switched in a Smart Link group, which of the following mechanisms can be used to refresh MAC and ARP entries? (Choose three.)

  1. MAC and ARP entries are refreshed automatically with respect to traffic.
  2. The Smart Link group uses a new link to send Flush packets.
  3. MAC entries are refreshed after the aging time expires.
  4. ARP entries are refreshed after the aging time expires