Ch. 9. chapter review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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3. which is true regarding dynamic routing? a. static routes are best in large networks and thus better to use than dynamic routing protocols. b. static routes are automatically added to the routing table but dynamic routes must be added by hand | show | 3. D. Dynamic routing scales well in large networks and routes are automatically added into the routing table. static routing is done by hand, one route at a time into each router. | 3
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show | 4. C. MAC addresses will always be the IP address of Fa0/0 interface. D. None of the above. | 4. B. Media Access Control (MAC) addresses are always local on the LAN and never go through and past a router. | 4
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5. what is it called when protocols update their forwarding tables after changes have occurred? a. name resolution b. routing c. convergence d. ARP resolution | 5. | 5. C. Routing convergence is the time required by the routing protocols to update the routing tables (forwarding tables) on all routers in the network. | show 🗑
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6. what command would be used to view the ARP cache on your host? A. C:\ > show ip route B. C:\ >show ip arp C. C:\ >show protocols D. C:\ >arp -a | 6 | show | 6
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show | 7. c. the router will use RIP to inform the host that it can't send the packet d. none of the above | 7. D. Hope you answered D! A router will not send a broadcast looking for the remote network- the router will discard the packet. | 7
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show | 8 | 8. C. RIPv1 and 2 and IGRP are all distance vector (DV) protocols. routers using a DV protocol send all or parts or their routing table in a routing-update message at a regular interval to each of their neighbor routers. | 8
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9. Which two of the following are link state protocols? A. RIPv1 B. RIPv2 C. OSPF D. IS-IS E. IGRP | 9 | 9. C,D. Open Shortest Path First (OSPF) and Intermediate System-to-Inermediate System (IS-IS) are link state (LS) routing protocols. | show 🗑
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10. Which of the following is a hybrid routing protocol? A. RIPv2 B. EIGRP C. IS-IS D. IGRP | 10 | show | 10
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11. What does the acronym IGRP stand for? A. Interior Gateway Routing Protocol B. Inside Gateway Redundancy Protocol C. Interior Group Reliability Protocol D. Interior Gateway Redundancy Protocol | show | 11. A. Interior Gateway Routing Protocol is a DV interior gateway protocol. | 11
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12. what EGP protocol is used on the internet? A. GGP B. EGP C. BGP D. IGP | show | 12. C. Border Gateway Protocol (BGP) is the most popular choice for ISPs or really large corporations. | 12
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13. What are the two categories of IGP protocols? a. link state b. static c. distance vector d. EGP | show | 13. A,C. Distance vector (DV) and link state (LS) are the two routing protocols to remember. | 13
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14. What two pieces of information does a router require to make a routing decision? a. destination network (address) b. destination MAC address c. application layer protocol d. neighbor router | show | 14. A,D. A frame uses MAC addresses to send a packet on the LAN. The frame will take the packet to either a host on the LAN or a router's interface if the packet is destined for a remote network. | 14
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show | 15 | 15. A. I hope you said A! Packets specifically have to be carried to a router in order to be routed through a network. | 15
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16. where along the IP routing process does a packet get changed? a. router b. host A c. destination device d. host B | 16 | 16. C. Remember that the frame changes at each hop but that the packet is never changed in any way until it reaches the destination device. | show 🗑
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17. when all routers in a network agree about the path from one point to another, the network is said to be what? a. dynamic b. static c. secure d. converged | show | 17. D. When the routing tables are complete because they include info about all networks in the internetwork, they are considered converged. | 17
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show | 18 | 18. A. This is step 6 in the IP routing process. if the hardware address isn't in the ARP cache of the host, an ARP broadcast is sent out onto the local network to search for the hardware address. | 18
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show | 19...router a static route that temporarily reroutes traffic through another office. d. implement convergence on the router | 19. C. The best answer would be to reroute traffic using a temporary static route until the maintenance is complete on the router. | 19
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20. when are you most likely to see a Request Timed Out message? a. when an unknown error has occurred b. when you have used the arp -a command incorrectly c. when a known error has occurred d. when you are using a hybrid routing protocol | 20 | 20. A. You are most likely to see a Request Timed Out message when (if) a packet is lost on the way back to the originating host for an unknown error. remember, if the error occurs because of a known issue, you are likely to see.. | show 🗑
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1. which is not a routing protocol? A. RIP B. RIPv2 C. RIPv3 D. EIGRP | show | 1. C. Yup, you got it. RIP, RIPv2, and EIGRP are all examples of routing protocols. | 1
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2. Which of these best describes dynamic routing? A. All network addresses must be hand-typed into the routing table. b. only a portion of the network address must be hand-typed into the routing table. c. routing tables are updated automatically when | 2. changes occur in the network D. A and B | show | 2. changes occur in the network, a dynamic routing protocol automatically informs all routers about the event.
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