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1、Final Exam Questions 1. Which of the following is part of the core RFCs for performance benchmarking? A. RFC 1242/2544 Benchmarking Terminology/Methodology for Network Interconnection Devices? B. RFC 2285/2889 Benchmarking Terminology/Methodology for LAN Switching Devices? C. Both D. Neither 2. RFC
2、2544 says that at least five frame sizes SHOULD be tested for each test condition. A. True B. False 3. What would be the correct order for predeployment testing of a device? A. Conformance, Performance, Functional B. Conformance, Functional, Performance C. Functional, Conformance, Performance D. Per
3、formance, Functional, Conformance 4. Which of the following is false regarding RFC 2544? A. It defines a specific set of tests that vendors can use to measure and report the performance characteristics of network devices B. The results of these tests will provide the user comparable data from differ
4、ent vendors with which to evaluate these devices C. RFC 1242 should be consulted before attempting to make use of this document D. Provides a methodology for benchmarking bridges only (not routers) 5. Which of the following is not a Layer 3 process? A. Routing protocols B. Spanning Tree protocol C.
5、Differentiated Services D. IP forwarding 6. Differentiated Services (Diffserv) re-defined the IPv4 Type of Service field. A. True B. False P148 7. Which of the following is not an IP Protocol? A. ICMP B. ARP C. Flow control D. IGMP 8. Which of the following has a priority field? A. IP Header B. TCP/
6、UDP Header C. Either D. Neither 注释：IP头部含有的TOS字段中含有3个比特的优先级子字段 ？9. Which of the following is True regarding active queue management (RED/WA. Determining which queue head should be serviced next B. Allowing low volume flows to take precedence C. Randomly dropping packets from selected flows D. Bandwid
7、th limiting schemes P15010. Which of the following QoS techniques is stateful? A. Differentiated Services B. RSVP C. 802.1p D. All of the above 11. Which of the following Queuing techniques leverages TCP congestion contromechanisms? 拥塞控制机制A. Custom Queuing B. Priority Queuing C. Random Early Detecti
8、on (RED) D. None of the above 12. All routing protocols refresh their routes every 30 minutes regardless of whether they change or not. A. True B. False 13. When testing a device dynamic route handling capabilities, you should try to see how many static entries you can configure. A. True B. False ？1
9、4. What is the difference between Series 1000 & 2000 Test Modules? A. The scalability & performance level B. Whether or not they can handle Advanced Layer 3 and Routing C. Their port densities D. All of the above 15. A Spirent TestCenter Chassis supports which of the following features? A. Hot Swapp
10、able Test Modules B. Multi-user operation C. Comprehensive Temperature monitoring D. All of the above ？16. What piece of hardware does the Spirent TestCenter Application download the test configuration parameters to and receive the results from? A. The Controller Module (i.e., chassis) B. The Test M
11、odule C. Each Port Group individually D. None of the above 17. Percentage of theoretical maximum could be based on which of the following: A) Frames per second B) Packets per second C) Bits per second D) All of the above ？18. Which Series (1000 or 2000) Spirent TestCenter module would you select if
12、you wantedto analyze up to 65,535 streams? A. 1000 Series Module B. 2000 Series Module C. Either D. Neither 19. What does Spirent TestCenter call the field that gives it the ability to track the sequenceand one-way latency of its generated test packets? A. There is none B. The Signature Field C. The
13、 Test Block D. The mAXTag 20. Spirent TestCenter can only connect to and control one chassis at a time. A. True B. False 21. Which of the follow is True regarding reserving Spirent TestCenter ports? A. You have to reserve all of the ports on a single module B. Multiple users can use the same ports C
14、. Multiple users can use different ports on the same modules D. Spirent TestCenter chassis/modules do not support multiple users 22. In Interactive Mode, what must you do to make sure that your changes have taken affectA. Nothing, they change automatically on the hardware as you change them in the G
15、UI B. Apply C. There is no Interactive Mode D. Start the test with the Command sequencer 23. Which of the following items can you track using the Results Browser? A. Aggregate Port results B. Control Plane (CPU) results C. Stream-based results D. All of the above 24. What are Host Blocks used for in Spirent TestCenter? A. The end points for the traffic Stream Blocks B. Access protocol emulation (PPP, DHCP, and IGMP) C. Simplifying complex test topology configuration
