COS2626 SCHOOL OF COMPUTING SEMESTERS 1 AND 2 ASSIGNMENTS 1,2,3 AND 4 2021

COS2626
SCHOOL OF COMPUTING
SEMESTERS 1 AND 2
ASSIGNMENTS 1,2,3 AND 4
2021

, COS2626/101


8.4 Assignments

8.4.1 Assignment 1: Semester 1

Assignment 01 Semester 1

Unique Assignment number
Study Material Chapters 2 - 7




Question 1

Which one of the following statements regarding standards is INCORRECT?
1. Standards are documented agreements containing technical specifications or other precise
criteria that stipulate how a particular product or service should be designed or performed.
2. Standards define the maximum acceptable performance of a product or service – not the
ideal.
3. Many different industries use standards to ensure that products, processes and services suit
their purposes.
4. Without standards, it would be very difficult to design a network because you would not be
certain that software or hardware from different manufacturers would work together.




19

,Question 2

Which one of the following statements regarding the OSI (Open Systems Interconnection) model
is CORRECT?
1. The OSI model is a theoretical representation of what happens between two nodes
communicating on a network.
2. The OSI model describes the type of hardware or software that should support each layer.
3. The OSI model describes how software programs interact with other software programs.
4. The following diagram depicts the flow of data through the OSI Model.




Question 3

When you choose to open a Web page in Firefox, a (n) layer protocol called
HTTP (Hypertext Transfer Protocol) formats and sends your request from your client’s browser to
the server.
1. Application
2. Session
3. Network
4. Transport




20

, COS2626/101


Question 4

How many terms from the list below are often used interchangeably to refer to a small piece of
data formatted for network transmission?

 frame
 packet
 datagram
 PDU
 byte
 token

1. 2
2. 4
3. 3
4. 5

Question 5

Significant IEEE (Institute of Electrical and Electronics Engineers) 802 standards are ,
which describes Ethernet; 802.11 which describes , and which describes
broadband wireless metropolitan networks.
1. 802.3; Wireless Networks; 802.16
2. 802.5; Wireless personal area networks; 802.15
3. 802.2; Mobile broadband wireless networks; 802.20
4. 802.1; WRANs (Wireless Regional Area Networks); 802.22

Question 6

Study the following diagram depicting an analog signal. What is the frequency of this signal?




1. 5 Hz
2. 4 Hz
3. 3 volts
4. 10 metres




21