| Question 1 | To create a floating static route when you're running the RIP routing protocol, what AD would work best? A. 120 B. 100 C. 140 D. 80 E. 1
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| A1: | Answer C is correct. When creating a floating static route, you need to make sure that the specified AD is higher than that of the routing protocol you're using. This way, the router only uses this route when it doesn't have a route to the specified network in its routing table. Because RIP has an AD of 120, you need an AD that is higher than 120. Therefore, answers A, B, D, and E are incorrect. |
| Question 2 | What command allows IGRP to load share across links of unequal bandwidth? A. split B. variance C. load-share D. None of the above
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| A2: | Answer B is correct. The variance command tells IGRP and EIGRP to use a specified value in determining what links are available for load sharing. Answers A and C are not valid options, thus incorrect; because a valid answer exists, answer D is also incorrect. |
| Question 3 | What type of configuration allows an interface to both back up another link and be used on a regular basis? A. Dialer pool B. Dialer interface C. Serial interface D. BRI interface
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| A3: | Answer A is correct. A dialer pool acts as a go-between for a physical interface and a dialer interface. Answer B, the dialer interface, is referenced in the backup interface command; when needed, it selects a physical interface out of those available in the pool. Answers C and D are physical interfaces. Answers B, C, and D are all incorrect. |
| Question 4 | In the command backup delay 20 30, when the primary link drops, how long does it take before the backup link is activated? A. 30 seconds B. 20 seconds C. 30 minutes D. 20 minutes
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| A4: | Answer B is correct. The first number in the command states how long the interface waits before becoming active. Therefore, answers A, C, and D are not correct. This value is in seconds. |
| Question 5 | The maximum value for the disable-threshold portion of the backup load command is A. 1000 B. 255 C. 128 D. 100
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| A5: | Answer D is correct. The values in the backup load command are percentages of the capacity of the primary link. Thus, the maximum value is 100. Therefore, answers A, B, and C are not correct. However, using 100 is not recommended because the load sharing will be removed very quickly in most cases. |
| Question 6 | The AD for OSPF is |
| A6: | Answer C is correct. The AD for OSPF is 110. Answers A, B, and D are the ADs for, in order, EIGRP, IGRP, and RIP. |
| Question 7 | In the command backup delay 10 50, how many seconds after the primary comes back online does the backup link wait before dropping? A. 10 seconds B. 40 seconds C. 50 seconds D. 60 seconds E. None of the above
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| A7: | Answer C is correct. The delay value being referenced is the second value, which says "When the primary comes back online, wait 50 seconds before dropping the backup link." Therefore, answers A, B, D, and E are not correct. You use the delay to make sure that the primary is going to remain online. |
| Question 8 | In the command ip ospf cost cost, what does the cost variable refer to? A. The cost of the link in dollars. We use expensive links more often to get our money's worth. B. The cost of the link in bandwidth. We can trick OSPF routing with this command. C. The cost of the link in bandwidth. We can trick OSPF spanning tree with this command. D. The additional cost of this link to take into account additional processing overhead from another process, such as route redistribution.
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| A8: | Answer B is correct. This command tells OSPF to ignore the bandwidth values it knows for this link and instead substitute the given value. Therefore, answers A, C, and D are incorrect. This command can really mess up a routing table if you use it incorrectly. |
| Question 9 | Which routing protocols can easily load-share across links of different bandwidth sizes? A. RIP B. IGRP C. OSPF D. EIGRP E. BGP
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| A9: | Answers B and D are correct. The Cisco protocols IGRP and EIGRP have a variance option that allows the protocols to load-balance across links of unequal bandwidth. Although OSPF and RIP also do this with varying amounts of configuration to trick the routing protocols, only IGRP and EIGRP can do it with one command. |
| Question 10 | What is a valid value for the backup load threshold command? A. 7 B. 56 C. 134 D. 218 E. All of the above F. Only A and B
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| A10: | Answer F is the correct answer. The backup load threshold command uses values from 0 through 100 and because the numbers 7 and 56 are the only ones in that range, they are the only correct answers. |
