Class Activity – EIGRP – Back to the Future Answers Class Activity – EIGRP – Back to the Future (Instructor Version)

Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only.


Implement advanced EIGRP features to enhance operation in a small to medium-sized business network.

EIGRP is revisited from previous content to provide the basis needed for this chapter’s content.


Many of these concepts in the bulleted list below were mentioned in the previous chapter’s curriculum content and will be the focus of this chapter:

  • Auto-summarization
  • Load balancing
  • Default routes
  • Hold-down timers

With a partner, write 10 EIGRP review questions based on the previous chapter’s curriculum content. Three of the questions must focus on the bulleted items above. Ideally, Multiple Choice, True/False, or Fill in the Blank question types will be designed. As you design your questions, make sure you record the curriculum section and page numbers of the supporting content in case you need to refer back for answer verification.

Save your work and then meet with another group, or the entire class, and quiz them using the questions you developed.


  • Word processing software program
  • Curriculum content from the previous chapter

Instructor Resources (previous-chapter representative example questions)

1. Fill in the blanks: If an EIGRP neighbor receives a ______ packet, it will respond with a ______ acknowledgment.

a. broadcast, broadcast
b. broadcast, unicast
c. multicast, unicast
d. unicast, multicast

2. By default, what metrics does EIGRP use to find the best network path? (choose all that apply)

a. MTU
b. Bandwidth
c. Load
d. Delay
e. Reliability

3. True or False: A router which receives a direct query from another router must acknowledge the query.

a. True
b. False

4. True or False: Multicast EIGRP packets for IPv6 are sent to FF02::10.

a. True
b. False

5. True or False: EIGRP can authenticate and encrypt routing updates.

a. True
b. False

6. Load Balancing: True or False: EIGRP supports equal cost load balancing as well as unequal cost load balancing.

a. True
b. False

7. Timers: True or False: Hold times are used to declare an EIGRP route as operational or down.

a. True
b. False

8. Timers: True or False: By default, the hold time is three times the hello interval, or 15 seconds, on most networks

a. True
b. False

9. Timers: True or False: By default, the hold time is 180 seconds and the hello interval is 60-seconds on low speed NBMA networks

a. True
b. False

10. EIGRP uses this algorithm to accomplish fast network convergence.

a. Bellman-Ford
b. Diffused update Algorithm (DUAL)
c. Dijkstra

Identify which of the following elements are characteristics of EIGRP:

  • Auto-summarization
  • DUAL
  • Load balancing
  • Hold-down timers
  • Hello interval
  • Multicast
  • Unicast
  • Broadcast
  • Encryption 



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