protocol analysis Quiz 5
QUESTION 1
- Which of the following routing protocols is a link-state protocol?
| OSPF | ||
| IGRP | ||
| BGP | ||
| RIP |
1 points
QUESTION 2
- What is the first step that an IP host performs when it receives an Ethernet II frame?
| Check the hardware address to see if it should be read further. | ||
| Check the validity of the FCS value. | ||
| Strip off the FCS field and hand the packet to the Data Link layer. | ||
| Examine the payload to determine the actual destination address. |
1 points
QUESTION 3
- Which phenomenon causes a black hole to occur?
| One or more routers become unavailable. | ||
| Link states change without notification. | ||
| ICMP is disabled on a router. | ||
| ICMP is enabled on a router. |
1 points
QUESTION 4
- When looking for a destination address for a datagram ultimately bound for a remote networkcommaB an IP host must check which structure to obtain the necessary information?
| ARP cache | ||
| routing tables | ||
| a source route request | ||
| proxy ARP to get the hardware address for the destination machine |
1 points
QUESTION 5
- Where is routing information stored in most routers and other similar devices?
| routing database | ||
| routing table | ||
| routing directory | ||
| route lookup cache |
1 points
QUESTION 6
- Which of the following definitions best describes a network that is in a converged state?
| Routers are waiting for table updates to finish propagating. | ||
| All routers know current available networks and their associated costs. | ||
| All routers use static routing tables. | ||
| All routers use link-state routing protocols. |
1 points
QUESTION 7
- Which of the following statements best describes the role of the ARP cache?
| a special area of memory on routers where already-resolved IP hardware address translations are stored | ||
| a special area of memory on IP hosts where already-resolved IP hardware address translations are stored | ||
| a special file where already-resolved IP hardware addresses are stored as a computer is powered downcommaB then read as it is powered back up | ||
| a special file where translations from symbolic names to IP addresses are stored |
1 points
QUESTION 8
- What happens when an IP host sends a reply to an IP host that requested its hardware address?
| Nothing happenscommaB other than sending the reply. | ||
| The sending host responds with an ARP request to the original requesting host. | ||
| The sending host uses the contents of its reply to the requesting host to add an entry for the requesting host to its ARP cache. | ||
| The sending host uses the contents of its reply to update the entry for the requesting host in its ARP cache. |
1 points
QUESTION 9
- When used over an asynchronous connection like an analog telephone link, PPP supports which of the following WAN encapsulation services? (Choose all that apply.)
| addressing | ||
| bit-level integrity check | ||
| delimitation | ||
| protocol identification |
3 points
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