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Question 1
a) Provide three advantages of using optical fiber. b) Distinguish between "Direct Sequence Modulation" and "Frequency Hopping" c) Decribe the purpose of using "Straight-Through" cable and "Cross-over" cable. d) Briefly explain the role of the "session and transport layer" of the OSI.
Question 2
a) The IP gives a number of core functions and associated procedures to carry out the several harmonizing functions. What are three main functions of IP, provide a brief description about each function. b) i) Describe what Network Address Translation (NAT) is? ii) Why is NAT used? c) Give three advantages and three disadvantages of NAT. d) Which TCP/IP utility will be used to evaluate the path taken by messages from workstation to a destination?
a) Calculate the CRC for the frame below: Frame: 1101011011 Generator: 10011 Message after appending 4 zero bits: 11010110110000 b) OSI refers to a system in which any
STAR TOPOLOGY In this topology, all devices are attached to a central point, which is sometimes known as the "Hub" as given in the diagram below. Figure: An ideal
Develop a TCP-based client-server socket program for transferring a large message. The message transmitted from the client to server is read from a large file (size is about 30000
(a) Describe how CSMA/CD operates and explain how Ethernet deals with collisions. (b) Describe how the subsequent protocols work: i. ARP ii. DHCP iii. DNS iv. SMTP (c) The
An injunction to 'think ethically' about a situation is not helpful. Perhaps if one has a background in moral philosophy this would work, but usually both students and IT professio
Encode the following plaintext, using the Caesar cipher: LORD OF THE RINGS b) The following ciphertext jw njbh lxmn cx kanjt has been encoded using a
differentiate between internet and www
ACCESS CONTROL DEVICES Successful access control system includes number of components, which depends on system’s requirements for authentication and authorization. Powerful auth
QUESTION: a) Explain four issues that are generally addressed in the Needs Analysis phase in the building-block approach to network design. b) Sketch a typical hybrid star-b
Question: (a) Prove that every positive integer n can be factorized into a product of prime powers. (b) State the Fermat-Euler theorem as needed in the RSA system. (c) Us
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