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gCORK INSTITUTE OF TECHNOLOGY INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ Semester 2 Examinations 2011/
Module Title: Networking Fundamentals 2
Module Code: COMP
School: Computing
Programme Title(s): Bachelor of Science (Honours) in Web Development – Year 1
Programmes Code(s): KWEBD_8_Y
External Examiner(s): Dr. Kevin Curran Internal Examiner(s): Ms. Olivia Brickley
Instructions: Answer question one and any three other questions
Duration: 2 Hours
Sitting: Summer 2012
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination. If in doubt please contact an Invigilator.
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Q.
a) How is connectivity tested at the network layer? (5 marks) b) What is ARP? (5 marks) c) What is the purpose of a routing protocol? (5 marks) d) What is meant by a connection-oriented protocol? (5 marks) e) Briefly describe the addressing features used in the Transport, Network and Data Link Layers, outlining the purpose of each. (9 marks) f) The Internet Protocol (IP) is connectionless, best effort and media independent. Explain these terms. (6 marks) g) How are errors detected in an Ethernet frame? (5 marks)
Q.
a) Describe the structure of a socket. What does this identify? (4 marks) b) You are the administrator of a network that has been assigned an address of 192.168.10.0/24. You require 5 subnets which can each support up to 30 hosts. i. How many bits must be borrowed for subnetting? ii. What is the network address of the first usable subnet? iii. What is the subnet mask for this network? iv. What is the address of the last host on this subnet. (16 marks)
Q. a) Straight-through and crossover are two types of UTP cable. How can we distinguish between these? List two scenarios where each type of cable is used. (10 marks) b) What are the limitations of extending LANs using hubs? (6 marks) c) How can these issues be overcome? (4 marks)
Q.
a) Describe what happens when a collision is detected on a CSMA/CD based MAC (10 marks) b) Define the terms Bandwidth, Throughput and Goodput (10 marks)
Q. a) Give a brief account of encapsulation in the context of computer communications (10 marks) b) List and explain the five basic operations of a switch. (10 marks)
