|
1 Comment
Identify the following types of ports
Work out the hexadecimal equivalent of 1011111000112Work out the hexadecimal equivalent of 1011111000112Divide in to 4 bits1011/1110/0011 Work out the hexadecimal of each group 1011-ll thus B 1110 = 14 thus E 0011-3 Join the representation BE316 Describe the following network services and identify their applications i. Voice mail (2 Marks) Voice Mail (or voice matt, voice mail VMS, sometimes called message bank) is a centralized system of managing telephone messages for a large group of people. In its simplest form it mimics the functions of an answering machine, uses a standard telephone handset for the user interface, and uses a centralized, computerized system rather than equipment at the individual telephone. Voicemail systems are much more sophisticated than answering machines in that they can:
ii. Video conferencing. (2 marks)
Differentiate between Internet and World Wide Web. (2 marks) The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols. The World Wide Web, or simply Web, is a way of accessing information over the medium of the Internet It is an information-sharing model that is built on top of the Internet. The Web uses the HTTP protocol, only one of the languages spoken over the Internet, to transmit data. Web services, which use HTTP to allow applications to communicate in order to exchange business logic, use the Web to share information. The Web also utilizes browsers, such as Internet Explorer or Netscape, to access Web documents called Web pages that are linked to each other via hyperlinks. Web documents also contain graphics, sounds, text and video.
The diagram below shows four common network topologies A, B, C (i) Name the network topologies labeled A, B, C and (4 marks)
(ii) Explain what happens if server X in topology A fails. (1 mark)
(iii) List two problems associated with network topology B. (2 marks)
(iv) List two disadvantages associated with network topology D. (2 marks)
Advantages of storing files in folders. (4 marks)
Properties that an operating system displays about a file. (2 marks)
What will happen if you attempt to delete a folder while a file contained in it is Open? (1 mark)
Explain the following terms as used in disk management using operating system: (i) Disk defragmentation. (2 marks) Process of putting together scattered files to fasten access speed (ii) Disk clean up (2 marks)
Process of deleting and removing files on the hard disk that may no longer be needed e.g. files on cache, internet files, installation files State and explain four functions of an operating system
Explain two coding schemes. (4 marks)
Physical features of human beings that can be considered in Bio metric analysis. (3 marks)
State and explain three components of an experts system. (6 marks)
What is Artificial Intelligence? (1 mark)
Explain the following interactive sensory equipment used in virtual reality: (2 marks) (i) Head gear.
(ii) Body suit
What is Virtual reality? (1 mark)
Is where a person gets psychologically immersed in an artificial environment generated by a computer system. Name the stage of program development cycle when: (3 marks)A user guide would be written.…………………………………………………………………………………….. Documentation A programmer dry-runs the code.…………………………………………………………………………………….. Testing and Debugging System charts would be drawn.…………………………………………………………………………………….. Program Design What is the difference between looping and selection? Looping executes the same block of code (module) again and again until a certain condition is fulfilled, while selection execution of a statement(I) depends on a condition that returns true or false ( yes / No
​Study the flowchart below and answer the questions that follows
​State the name of the control structure shown in the flowchart. (1 mark)
Selection control structure
Assuming the user keys in 8 and 14 when prompted to enter the values for m and N respectively, determine the printed values of P, Q, ï£ and y. (4 marks)
​The printed values are
P=8, Q=14, x-8 and y=14 ​Write the pseudocode that would be used in place of the flowchart. (5 marks)The pseudo code is as follows BEGIN Print "enter the value of M and Nâ€; Read M,N Set c= M; Set y = N; P = y - c; Q = c- y; IF P >Q THEN; Set P = c; Set Q = y; ELSE Set P = y; Set Q = c; ENDIF PRINT P, Q, c, y; END For each of the following file organization methods, state an appropriate storage medium(a) Serial
Functions of Central Processing Unit (3 marks)
Suggest three reasons that would make workers unhappy with the new system. (3 marks)
|
Categories
All
Archives
December 2024
|
RSS Feed