Review Questions
- 1. The designer is concerned about reliability and is interested in local acknowledgement. Which of the following encapsulations would be the best choice?
- A. IP FST
- B. Direct
- C. TCP
- D. Local SRB
- 2. Which of the following is true regarding custom queuing?
- A. Bandwidth is guaranteed to SNA only.
- B. Bandwidth is guaranteed to Layer 3 protocols only.
- C. Four queues prioritize traffic.
- D. Bandwidth is allocated more fairly than with priority queuing.
- 3. In a dual FEP design, which of the following is true?
- A. Routers must use HSRP.
- B. The LAA is the same on both FEPs.
- C. The LAA must be different on both FEPs.
- D. Both FEPs must be running VTAM.
- 4. A risk in priority queuing is:
- A. Protocols in the lower priority queues will not be serviced and the frames will be dropped.
- B. Bandwidth will be consumed to maintain information regarding the queue.
- C. Compression, required on priority queues, will consume too much processor.
- D. The fast switching table will be corrupted.
- 5. When designing a redundant network using dual backbones, designers are cautioned:
- A. Against using dual FEPs
- B. Against using SNA
- C. Against leaving explorer packet forwarding at its defaults
- D. Against leaving the LU forwarding metric at its defaults
- 6. All packets in priority queuing are:
- A. Fast switched
- B. Process switched
- C. Switched via NetFlow on T1 or greater links
- D. Distributed switched on VIP-2 40 modules
- 7. DLSw+ peer groups provide which of the following benefits?
- A. Any-to-any connectivity
- B. Easier configuration
- C. Optimized explorer packet processing
- D. All of the above
- 8. Peer group DLSw configurations provide for:
- A. Unequal-cost load balancing
- B. Equal-cost load balancing
- C. Per-packet forwarding
- D. Per-packet forwarding over unequal-cost paths
- 9. STUN local acknowledgement provides which of the following benefits?
- A. Prevention of application timeouts
- B. Packet conversion
- C. Compression
- D. Encryption
- 10. An LAA is:
- A. An SNA DLSw address
- B. A locally administered IP address
- C. A locally administered MAC address
- D. Stored on the TIC only
- 11. True or false: Dual FEPs can use the same LAA.
- A. True
- B. False
- 12. True or false: The odds of packet loss are greater for lower priority packets with priority queuing than with custom queuing.
- A. True
- B. False
- 13. The RIF field:
- A. Marks a frame as modified by DLSw
- B. Marks a frame as discard eligible
- C. Provides a hop-by-hop path through the bridged network
- D. Provides a hop-by-hop path through the routed network
- 14. Local acknowledgement is available with which of the following encapsulations?
- A. STUN
- B. RSRB
- C. DLSw
- D. All of the above
- 15. Which of the following techniques may be used to provide redundancy in mainframe installations?
- A. Dual front-end processors
- B. Dual backbone rings
- C. Dual Token Ring interface cards
- D. All of the above
- 16. SSCP is part of which of the following?
- A. TIC
- B. FEP
- C. VTAM
- D. PU
- 17. APPN provides which function?
- A. End station-to-end station connectivity, sans host
- B. SNA routing
- C. SNA encapsulation
- D. A and B
- E. A and C
- 18. A Cisco router can terminate physical mainframe connections:
- A. Via the channel interface processor
- B. Via the PA FE-ISL adapter
- C. Only via TCP/IP
- D. By forcing DTR high on all serial connections, including ESCON
- 19. True or false: Ethernet contains a RIF.
- A. True
- B. False
- 20. Priority queuing might be used by the network designer:
- A. To provide basic service quality to SNA packets
- B. To compress data in order to conserve bandwidth
- C. To add an encryption algorithm to the packet flow
- D. To intentionally discard packets based on packet type
Answers to Review Questions
- 1. C.
- 2. D.
- 3. B.
- 4. A.
- 5. C.
- 6. B.
- 7. D.
- 8. B.
- 9. A.
- 10. C.
- 11. A.
- 12. A.
- 13. C.
- 14. D.
- 15. D.
- 16. C.
- 17. D.
- 18. A.
- 19. B.
- 20. A.