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Question:
a) There are two basic approaches to dealing with errors in the presence of pipelining. One way is Go-Back-N and the other strategy is Selective Repeat.
i. Explain briefly how Go-Back-N operates.
ii. Demonstrate your understanding on selective repeat.
b) Design the frame format for bit-oriented protocols. Label it appropriately. Show how many bits each part occupies.
c) Different protocols are used on the multiple access channels: polling, ALOHA, amongst others.
i. Explain with respect to performance how CSMA is an improvement over ALOHA?
ii. How is a slotted ALOHA type of satellite packet broadcasting network an improvement over pure ALOHA?
d) 10Base5 cabling is commonly known as thick Ethernet.
i. Demonstrate your understanding on 10Base5 cabling
ii. What is the maximum segment of 10Base5 cabling?
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
Describe what the FTAM services are. FTAM stand for the File Transfer Access and Management: FTAM is an ISO application protocol which performs the operations on files such as.
state the fundamental principles of 3gpp security
FRAGMENTATION One method is to limit datagram size to smallest MTU of any server. IP needs fragmentation i.e. datagrams can be divided into pieces to fit in network with small
QUESTION (a) What do you meant by data spoliation? (b) Justify the following statement: "Disk imaging differs from creating a standard backup of disk." (c) Why do yo
What are the main differences between TCP/IP vs OSI?
Symmetric Encryption This encryption method makes use of same “secret key” to encipher and decipher the message and it is termed as private key encryption. This type of encrypti
Problem: (a) Use a simple example to explain what is meant by a finite state machine. (b) Describe the time limit problem in an interrupt-driven system. (c) A certain m
Question: (a) What are the various options to mitigate risks in an Information Security Management System (ISMS)? For each option specify an instance where it can be used.
IP DATAGRAM SIZE: Datagrams may have different sizes i.e. Header area is generally fixed (20 octets) but can have various options. Data area may contain between 1 octet and 6
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