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Midterm

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Department
Information Technology
Course
ITEC 3210
Professor
Younes
Semester
Winter

Description
ITEC 3210 M - Applied Data Communications and Networks Professor: Younes Benslimane, Ph.D. Midterm Exam – February 11 2013 Instructions  Duration: 1 hour 20 minutes  Answer all questions  No documentation / No calculator allowed  Give short and clear answers (You add unnecessary content, I subtract marks!)  Work independently  Keep presentation neat Questions Max Mark Multiple Choice 25 True / False 25 Short Essay 30 Subnetting 20 TOTAL 100 Student Last Name, First Name: Student Number: Multiple Choice (2.5 marks each): One choice (a, b, c, d, or e) is possible 1. Which of the following statement(s) about application architecture is (are) true? a. The current best practice is “logical star” b. Current options include “physical star” c. An option no longer available is “physical bus” d. All of the above e. None of the above 2. Selection criteria for network operating systems (NOS) include: a. Hardware and software compatibility, not Ethernet compatibility b. Network architecture(s) supported c. Nominal data rate(s) supported d. a and b e. a, b and c 3. Which of the following statement(s) about protocols is (are) true? a. TCP is used for connection-oriented transmissions b. UDP is used for reliable delivery of packets c. ARP is used by thin clients to obtain the address of the default gateway close to its subnet d. All of the above e. None of the above 4. Which of the following statement(s) about addressing and subnetting is (are) true? a. Subnetting is required for all networks b. MAC addresses are required for all networks c. Computers on the same subnet have the same net ID but computers with different MAC addresses cannot be on the same subnet d. a and b e. a, b and c 5. Which of the following statement(s) about the OSI and the TCP/IP models is (are) true? a. The 7 layers of the OSI model are the application, the presentation, the session, the transport, the network, the data link and the physical layer b. The 5 layers of the TCP/IP model are the application, the transport, the network, the data link and the physical layer c. In the OSI model, the application layer handles the transfer of data between applications while the presentation layer handles the segmentation of the message d. a and b e. a, b and c 2 6. If you are trying to log onto www.toronto.ca, a related DNS response message contains: a. The host name corresponding to www.toronto.ca b. The IP address corresponding to www.toronto.ca c. The MAC address corresponding to www.toronto.ca d. The IP address of the next router on shortest path to the server you are trying to log onto e. None of the above 7. Which of the following statement(s) about addressing is (are) true? a. NAT allows to use a set of IP addresses for internal traffic and a second set for external traffic b. IPv6 uses 128-bit addresses and is designed to allow more hosts to be connected to the Internet c. Layer-2 addresses are 48-bit addresses and are represented using dotted decimal notation d. a and b e. a, b and c 8. Which of the following statement(s) about network devices is (are) true? a. Hubs are layer-1 devices and switches are
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