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Name one wireshark-filtering-command to show the tcp and http packets sent to ip address 65.208.228.223;
b) Name one UNIX/LINUX-command to check which port of your computer is listening
c) Name one python-command to receive a packet using a server socket.
d) Name one UNIX/LINUX-command to implement CIDA subnet mask x.x.x.x/23 on interface enp3
Describe the differences between a symmetric key encryption system and a public key encryption system. Name one algorithm or application for each system. (10 marks)
What is ICANN, and give 2 major functions of ICANN.
b) What is/are used (in datagram) to direct segment to appropriate socket of your target computer.
Give 2 types of Cyber attack using malware
b) Give 2 prevention methods to avoid man-in-the-middle-attack
A new company has three buildings and each building is more than 100 m apart from the other. A backbone network is to be installed to connect the buildings together. A fiber-optic backbone is proposed. (9 marks)
Discuss whether the following results can be achieved by this proposal.
(i) The network must operate at a speed of at least 200 Mbps (3%)
(ii) The network should be secured from eavesdropping (3%)
(iii) The budget should be less expensive than coaxial-cable (3%)
a) What is CIDR ? Why do we use classless instead of classful in ip subnetting ?
b) Describe the differences between CIDR 200.23.16.0/23 and 200.23.16.0/24
a) What are the differences between Network layer and Transport layer, in terms of logical communication.
b) Describe the definition of routing and forwarding in ip routing algorithms.
c) What is DHCP ?
You have given A and B as2 lists which may have repeated elements in respective list. Write a python function mg-L(A,B) which takes list A and B as input and returns a merged list. The function will merge the list B with A (means the list A will be expanded) such that the resultant A
still contain no duplicates. Specify input in fixed form. Use only list operations. For example if
A =[2,4,8,2,1] and B=[10,4,3,8,7] merged-list =[1,2,3,4,7,8,10]
How do you write the residue at z=∞ where f(z) = 1/z^3+z^5?
A)-2
B)-1
C)1
D)0
The schedule below shows the quantities of shoes demanded at each income level in a community from 2020 to 2021:
Year
Income (R)
2020
5 000
1 000
Quantity (units) 2021
6 500
900
- Calculate the income elasticity of demand, using the arc method and interpret your result
- List any four factors that could result in the shoes having inelastic price elasticity of demand
- Explain the importance of understanding the relationship between price elasticity of demand and total revenue.
#339914 on Dec 2023