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Illustrate out the functions of modulator and source encoder in digital communications system. By using suitable examples, make a distinction between the simplex and half duplex mode of communication.
PSTN is what kind of network? Circuit switched network, Public switched network, Packet switched network or Private switched network.
The three major categories of computer networks are: LAN, WAN, TAN, LAN, PAN, WAN, Ring, Bus, Star or None of the above.
Which of the following is non-impact printer that prints by spraying ink on the paper: Dot matrix printer, Line printer, Laser printer or Ink jet printer.
Which of the following is not true about virtual memory: It provides the basis for multi process operation, It supports that multiple programs are running concurrently and It is a physical memory.
The Instructions inside the ROM is called as: Software, Hardware, Firmware and Mediumware.
Make a distinction between raster and vector images.Describe the concept of bit depth. What is the minimum number if bits required for a one-colour digital image to be photorealistic.
Rregarded as a fifth part of computer system Hardware, Software, Procedures and People. Which of the following devices is the example of magnetic storage device:Floppy disk, CD –ROM and DVD.
Describe the role of Planners, Schedulers, and Estimators in job flow of a typical printing company. What are the common problems encountered in preflight department?
Write down the types of Multiplexing techniques. Suppose a 4 KHz bandwidth telephone line. When the signal is 10 V, the noise is 15 mV. What is the maximum data rate supported by this telephone line
The main elements of protocol are the syntax, timing and semantics. Provide a brief explanation of each of these main elements.
Illustrate the meaning of abbreviations of CMYK and RGB. Mention the five steps to follow for converting the file in PDF file for print.
A man is aged exactly 55. What is the probability he dies between his 60th birthday and his 65th birthday, assuming the AM92 mortality table?
Describe the problems which are associated with data redundancy. Describe the 3 levels architecture of the Ansi-Sparc Model and demonstrate your answer with suitable diagram.
Briefly explain the three main purpose of using graphics in Multimedia. Illustrate the term “Multimedia Kiosk”. Explain briefly an example to support your answer.
What four types of active attacks and list all their respective attacks to which security services? Make a distinction between authentication and non-repudiation.
Describe how CSMA/CD operates and illustrate how Ethernet deals with collisions. Provide the structure of a typical Token Ring frame and describe how communication is effected in a Token Ring Network.
HTTP provides different techniques for loading information from a client to a web server, namely: Post, Get and Head. Justify the use of each technique.
You need an algorithm which will receive two integer items from a terminal operator, and display to the screen their sum, difference, product and quotient.
You have been selected to design the networking for connecting the employees and facilities of Acme Manufacturing Company and transferring data as needed for the company.
Provide a few applications of lofting. Briefly describe with the aid of an appropriate diagram, what you understand by the term ‘boundary surface’.
Write down four socket functions (C functions) used to create client/server applications. Write five layers in a typical TCP/IP computer network. Write down the services provided by TCP?
Describe the process of mapping data structures and data items to messages. Name five characteristics of real time operating systems.
Note down the complete command line to perform following task in UNIX shell. Write a bash script that displays its name and checks for existence of a file. If the file exists it will display a messag
Describe with suitable examples: simplex, half duplex and full duplex modes of Data transmission. Write down some of the advantages and disadvantages of email service against telephone service.