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Question:
a) What is a Linux shell?
b) Prepare the commands for the following tasks: i) Change the working directory ii) Show the working directory iii) Execute a program iv) Terminate the shell
c) One example of the more powerful command-line tools in Linux is using streams. Give two other examples of command-line tools.
d) Explain the term "standard error" concerning the types of input and output streams.
e) Describe the "join" command in Linux, support your answer with a suitable example.
f) State two reasons why Linux Operating System is better than one of its competitors.
Fragmentation - Wireless environment is very noisy - Corrupt frames must be retransmitted - Large frames must be divided into smaller ones to increase efficiency
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Briefly write functionalities of different OSI layers? The OSI Reference Model includes seven layers. Basic functionality of each of them is as follows: 1. Physical Layer:
what are the main problems of signal propagation?why do radio waves not always follow a straight line?why is reflection both useful and harmful?
Connection to backbone LAN In most cases, interconnection with stations on a wired backbone LAN is needed. For infrastructure wireless LANs, this is simply accomplished by the
Describe some common threats to the hardware Theft of a computer, printer, or other resources. Tampering by a disinterested or frustrated employee who takes every chan
Describe in detail with example how data fragmentation works?
MIME The Multipurpose Internet Mail Extensions While the message headers described in are satisfactory for sending ordinary ASCII text they are not sufficiently Reich for
Q. What do you mean by Modems? Telephone Modems - A telephone line has a bandwidth of approximately 2400 Hz for data transmission
Network Layer The internet network layer is responsible for moving network layer packets known data grams from one host to another. The internet transport layer pro
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