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Midterm

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Department
Information Technology
Course
ITEC 3210
Professor
Younes
Semester
Winter

Description
ITEC 3210 A - Applied Data Communications and Networks Professor: Younes Benslimane, Ph.D. Midterm Exam – October 20 2011 Instructions  Duration: 1 hour 15 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 MC 18 Short Essay 9 Subnetting 9 Case 14 TOTAL 50 Student Last Name, First Name: Student Number: Multiple Choice (2 marks each): One choice (a, b, c, d, or e) is possible 1. Which of the following statement(s) about the OSI model is (are) true? a. The application layer handles the communication between 2 programs b. The presentation layer handles the conversion between data formats c. The network layer is also known as Layer 3 d. All of the above e. None of the above 2. Which of the following statement(s) about thin clients is (are) true? a. They are typically more expensive than thick clients b. They are typically connected through 10Mbps ports c. They are best used when users need to install their applications on their microcomputers d. All of the above e. None of the above 3. Which of the following statement(s) about network devices is (are) true? a. Hubs are layer-1 devices b. Switches can be layer-2 or layer-3 devices, whereas routers are layer-3 devices c. Hubs can be half-duplex or full-duplex devices d. a and b e. None of the above 4. Which of the following statement(s) about the transport layer is (are) true? a. It handles the segmentation and the reassembly of messages b. It is also known as Layer 5 of the OSI model c. HTTP handles the reliable delivery of messages d. a and b e. a, b and c 5. Which of the following statement(s) about UDP is (are) true? a. It is used to translate an IP address into a non-IP address b. It is used to find best paths to route data packets between senders and receivers c. It operates at the transport layer d. All of the above e. None of the above 2 6. Which of the following statement(s) about addressing is (are) true? a. Flat addressing should be used for small networks with no Internet access b. Hierarchical addressing should be used for structured networks c. NAT is used when 2 sets of IP addresses are used in a network d. All of the above e. None of the above 7. Which of the following statement(s) about routers’ operations is (are) true? a. Routers are used to send data between networks b. At each hop, routers change the data-link layer information of data packets c. Routers are used to send data within
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