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Question 1
a) Provide three advantages of using optical fiber. b) Distinguish between "Direct Sequence Modulation" and "Frequency Hopping" c) Decribe the purpose of using "Straight-Through" cable and "Cross-over" cable. d) Briefly explain the role of the "session and transport layer" of the OSI.
Question 2
a) The IP gives a number of core functions and associated procedures to carry out the several harmonizing functions. What are three main functions of IP, provide a brief description about each function. b) i) Describe what Network Address Translation (NAT) is? ii) Why is NAT used? c) Give three advantages and three disadvantages of NAT. d) Which TCP/IP utility will be used to evaluate the path taken by messages from workstation to a destination?
PARSING IPv6 HEADERS Base header is fixed in size i.e. 40 octets. NEXT HEADER field in the base header describe kind of header and it seems at end of fixed-size base header. S
on LAN,where are IP datagrams transported?
Innovative nature of triple key management The triple key management scheme provides secure services by combining different techniques whic contribute to the security and priv
1. We used the National Vulnerability Database. Select a recent vulnerability from that Database and analyse it from the following aspects: Criticality level Impact in
Question: (a) Which of the following is not a goal of security: i) detection ii) prevention iii) recovery iv) prosecution (b) You are an honest student. One day you
Proof that the sender forwards the message. It also prohibits the author of the code from falsely denying that he forward the message. This is achieved by record using the exact ti
Problem (a) Differentiate between private key and public key encryption. (b) What issue with private key encryption is resolved with public key encryption? (c) Describe
Question (a) For the bit stream 010011, show the waveforms for each of the code indicated. Consider that the signal level for NRZ-L for mark is positive; the signal level for t
Question: (a) Describe fully with example the two access control methods available to implement database security. (b) Discuss why database statistics (meta data) provide es
FRAGMENT IDENTIFICATION: IDENT field in every fragment matches IDENT field in real datagram. Fragments from different datagrams may arrive out of order and still be saved out.
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