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Question One |
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Deadline: Day 14/2/2020 @ 23:59
Computer Networks
IT210
College of Computing and Informatics
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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?
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Cases |
Needed speed (can be a range) |
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1 |
High-definition video streaming |
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2 |
If you mainly want to use the Internet for sending and receiving emails. |
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3 |
If you mainly want to use social network |
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4 |
If you want to download music or stream videos. |
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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).
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Type |
Topology |
Advantages |
Disadvantages |
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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?