ece407_midterm

ece407_midterm - V~b~ '\}'J~-- 16 +-1 ::) 87 104--1...

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Unformatted text preview: V~b~ '\}'J~-- 16 +-1 ::) 87 104--1 <3b3=f ~I ECE407 Spring 2008 Midterm Exam: Part t - 88 TRUE OR FALSE .r... I. The MAC sub layer guarantees reliable delivery. F 2. Successive datagrams cannot take different paths. ~ 3. TCP is a connection-oriented protocol. F.,. 4. A NAK is a positive acknowledgement. f ... 5. Bridges operate in the network layer. .f.. 6. All multiple-access protocols will experience collisions. 1.... 7. The ALOHA protocol matured into Ethernet. .l.. 8. Geosynchronous satellites are poor for carrying 2-way voice. I i' \ I iJ U o I I I ! C I ~ .. 9. The Hamming distance between the 2 Bytes representing decimal 178 and 12] is 5. l. 10. All lines coming into a hub must operate at the same speed. f ... II. A WAN is for smaller geographic ar~as than a MAN. T. 12. SDH and SONET are very similar. K f .. 13. It is never required to provide acknowledgements in the data link layer, ,:: ... oo. 14. The ARPANET was sold to AOL. I! I 1 \ I I rJ (.J I I I I!; 0 I 0 I I r-oo. 15. Optical power level is a layer 3 concern. 'Too. 16. The Session layer is little used in practice. .. f 17. For bit-oriented protocols, on idle point-to-point lines, no flags need to be transmitted. f.. 18. Radio is the least reliable transmission medium. ~19, Analog telephone lines are run on a half-duplex basis. F=- h ...... 20. Bluetooth as a 0.5 km range. .F.: .. 21. X.25 is a recent protocol. ~ ... 22. The bit rate can be larger than the baud rate, .t:= .. 23. UDP is a connection-oriented protocol....
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This note was uploaded on 03/07/2011 for the course ECE 407 taught by Professor Brucebriely during the Spring '09 term at Illinois Tech.

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ece407_midterm - V~b~ '\}'J~-- 16 +-1 ::) 87 104--1...

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