Nnetwork

Pg. 01

Question One

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Computer Networks

IT210

College of Computing and Informatics

Question One
1 Mark

Learning Outcome(s):

Explain networking principles, models and technologies.

Most Internet service providers (ISPs) offer several levels of mobile services each with a different Internet speeds, usually measured in Mbps (megabits per second). What kind of speed do you need for each of the following cases?

Cases

Needed speed (can be a range)

1

High-definition video streaming

2

If you mainly want to use the Internet for sending and receiving emails.

3

If you mainly want to use social network

4

If you want to download music or stream videos.

Question Two
Learning Outcome(s):
Outline the physical layer & associated hardware and software integration.

1.5 Marks

A network can have several different types of physical topology, name two of them discussing their topology, advantages and disadvantages (on your own words).

Type

Topology

Advantages

Disadvantages

Question Three
1.5 Marks

Learning Outcome(s):
Outline the physical layer & associated hardware and software integration.

Decomposing periodic analog signal into two sine waves having a phase shift equivalent to 1/6 and 1/8 cycle with respect to time 0. These sine waves have 8 and 12 cycles for a duration of one second. Both have a maximum amplitude of 15 volts. What are the phases in degrees and radians and represent both signals in time and frequency domains plot?

Question Four
1 Mark

Learning Outcome(s):

Outline the physical layer & associated hardware and software integration.

What is the transmission impairment? List the common causes of impairment and explain each?

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