QUESTION

(a) Briefly explain the contents of the Needs Analysis, which is step in the process of network design.

(b) Describe on the three ways of improving the performance of a network, with regards to Network Management.

(c) The ASN.1 specification language is an integral part of the OSI Reference Model architecture, and is used in protocols on the Internet. ASN.1 data objects are encoded for transmission using the Basic Encoding Rules. Provide an example of a transmitted byte-stream in hexadecimal by using the subsequent module of data type declarations and its corresponding instances:

Player ::= OCTET STRING, Age ::= INTEGER, Injured ::= BOOLEAN

{Player, "Paul Smith"}, {Age, 21}, {Injured, 0}

(d) Explain the keys used in the process of preparing a Digital Signature, stating the origin of the keys.

(e) Two important system performance parameters are: Reliability and Availability.

i.Determine the MTTR to the nearest hour of a system with an availability of 99% with an average of 3 failures per year.
ii. Determine the MTBF to the nearest hour if the reliability of a system needs to be 99.98% over 30 days.