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QUESTION :
a) A datagram of 3000 bytes has to travel over a network with a MTU size of 1000 bytes. Describe how fragmentation can be used to solve this problem. You should provide the value of the 3 key fields used in fragmentation for each fragment created.
b) Ethernet has grown in popularity in the recent years and is now widely used in LANs. Give reasons for the success behind Ethernet.
c) Ethernet uses CSMA/CD. Explain the features behind CSMA/CD.
d) A repeater is a physical-layer device generally used in an Ethernet network. List the features of a repeater.
e) Consider you have to recommend someone to build a network. Would you recommend him to use a repeater? Illustrate your answer giving your reasons, specifying any other device that will be used instead.
Scenario: A network with individual hosts (really, virtual machines) can run HTTP (web) servers that are available to the outside. (Here, available means the ability to read and wr
Question (a) Inspect the following ifconfig output of an IPv6 interface: i. What is the hidden Hardware Address of the interface on Line #1? ii. What is the hidden subn
QUESTION (a) Illustrate the term file carving. (b) What are the basic three main techniques for image steganography? (c) Distinguish between vector graphics and raster
FIREWALL ANALYSIS TOOLS There are a number of tools automate remote discovery of firewall rules and assist the administrator in analyzing rules Administrators who feel wary of u
Risk Determination For purpose of relative risk assessment, risk equals probability of vulnerability occurrence TIMES value MINUS percentage risk already controlled PLUS an elem
Question: (a) Describe the term interference in the space, time, frequency, and code domain. (b) Consider a 1 G - AMPS: 824-849 MHz (forward) ; 869-894 MHz (reverse). B
QUESTION A small ISP requests your help. The technicians report that they have had no downstream access to the Internet. They believe the problem lies with their access provide
Internet Protocol IP Gives computer-to-computer communication. Host and receiver addresses are computers. This is also known machine-to-machine communication.
What do you understand by the term encryption? Also describe the public key cryptography Encryption: Encryption is a method of converting plain text into cipher text. Using thi
Simplex data exchange Simplex communication defines to communication that happens in one direction only. Two definitions have made over time: a common definition, which is des
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