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Question :
(a) Distinguish between authorization and authentication.
(b) SSO (Single Sign On) implies a user logs in once and can access resources for a defined period of time without having to provide username and password again. Describe how Kerberos provides Single Sign On.
(c) What type of cipher relies upon changing the location of characters within a message to achieve confidentiality?
(d) Give two examples of modern block cipher other than DES.
(e) SNMP is a protocol for managing networks. For each message, a secure digest is formed from a shared secret and the message. What security functions does this digest provide?
(f) Provide example of a digital certificate format that is commonly used.
CRC can detect the following errors better than check sums. a) Vertical errors b) Burst errors a) VERTICAL ERRORS: This kind of error happens due to a hardware fai
a. PKI and PGP are two methods for generating and managing public keys for use in protocols such as secure email. Compare and contrast the trust models for public keys used in PKI
UDP COMMUNICATION SEMANTICS: UDP needs IP for all delivery, that is, similar best effort delivery as IP. To use UDP, an application have to either be immune to the causes or
Question: (a) African governments are slowly shifting to more transparent ICT regulations. However, but limited spectrum availability remains a key barrier to sustaining lon
(a) Draw the waveform for an asynchronous transmission with the given specifications: 8 data bits with value 11010001 (LSB listed first here), one parity bit (even), one star
ASSET IDENTIFICATION AND VALUATION This process begins with identification of assets that includes all elements of an organization’s system (people, procedures, data and informa
algorithm on simple intrest
Problem: (a) Assume that a new application layer protocol is developed for video conferencing application. Which transport layer protocol, between TCP and UDP, will you u
how to encryt the data in plaintext cipher
The objective of this example is to demonstrate the steps required for a successful attack against a vulnerable Windows XP SP2 system. It will show: a) how Nessus can be used to di
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