Other
COS2626 SCHOOL OF COMPUTING SUMMARY NOTES
- Institution
- University Of South Africa
COS2626 SCHOOL OF COMPUTING SUMMARY NOTES
[Show more]
Content preview
COS2626COMPUTER NETWORKS
STUDY NOTES,
ASSIGNMENTS 1,1,2,3
SEMESTER 1&2
EXAM PACK
2022
,8.4 Assignments
8.4.1 Assignment 01: Semester 1
Assignment 01 Semester 1
Due Date 12th March 2013
Unique Assignment number 392756
Study Material Chapters 2 - 7
Submission Procedure Mark-reading sheet or electronically via myUNISA
Number of Questions 55
Assignment Weight 40%
WARNING: IF YOU DO NOT SUBMIT THIS ASSIGNMENT YOU WILL NOT BE
ALLOWED EXAMINATION ADMISSION!
Question 1
Which one of the following statements regarding standards is INCORRECT?
1. Standards assist in network design.
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. Standards define the minimum acceptable performance of a product or service – not the
ideal.
Question 2
Study the following list of characteristics:
Trade organization composed of representatives from United States electronics
manufacturing firms
Sets standards for its members
Helps write ANSI (American National Standards Institute) standards
Lobbies for favorable computer and electronics industries legislation
These characteristics describe the organization’s standards.
1. EIA (Electronic Industries Alliance)
2. IEEE (Institute of Electrical and Electronics Engineers)
3. ITU (International Telecommunication Union)
4. ISO (International Organization for Standardization)
16
, COS2626/101
Question 3
The following diagram illustrates layer functions.
1. Presentation
2. Application
3. Transport
4. Session
Question 4
The following statements describe a network address including its addressing scheme, formats
and alternate names. Which statement (s) regarding the network address is (are) INCORRECT?
a. Network addresses follow a hierarchical addressing scheme and can be assigned through
operating system software.
b. Network layer address formats differ depending on which Network layer protocol the
network uses.
c. Network addresses are also called Network layer addresses, logical addresses, or virtual
addresses.
1. only a and b
2. only b and c
3. only c
4. neither a, b nor c
17
, Question 5
Suppose that, at the receiving node, a frame’s FCS (frame check sequence) doesn’t match the
FCS it was issued at the transmitting node. What happens as a result?
1. The receiving node’s Transport layer assesses the error and corrects it.
2. The transmitting node’s Data Link layer assesses the error and corrects it.
3. The receiving node’s Data Link layer requests a retransmission.
4. The transmitting node’s Transport layer immediately issues a replacement frame.
Question 6
Complete the following table by identifying the correct IEEE (Institute of Electrical and
Electronics Engineers) 802 standard.
STANDARD NAME TOPIC
A Mobile broadband Packet handling and other specifications for
wireless network multivendor, mobile high-speed wireless
transmission, nicknamed "mobile WiMAX".
B Broadband wireless The atmospheric interface and related functions
metropolitan area associated with broadband wireless connectivity;
networks also known as WiMAX.
1. 802.20; 802.16
2. 802.11; 802.22
3. 802.15; 802.12
4. 802.17; 802.22
Question 7
Given the following definitions, identify the correct property of analog signals.
a. Measure of strength at given point in time
b. Number of times amplitude cycles over fixed time
c. Distance between one peak and the next
d. Progress of wave over time compared to a fixed point
1. amplitude; frequency; wavelength; phase
2. frequency; wavelength; phase; amplitude
3. wavelength; phase; amplitude frequency
4. phase; amplitude; frequency; wavelength
18
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TopscoreG. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R76,27. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80435 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now