QUESTION 1 - Services & Servers, Directory services

a) [i] "If you aren't monitoring it, you aren't managing it."-Explain the consequences of not monitoring IT services in an organisation.

[ii] Suppose you are to make a data centre for providing services to your customer. Explain how you would address the issues of: server selection, topology type to use and space and power requirements.

b) [i] If you a system administrator for an organisation that uses a lot of desktop machines, then what kind of directory service would you offer with justification. Explain the architecture of the directory service that you have selected.

[ii] How would you protect confidential information on LDAP servers from hackers

QUESTION 2 - System Documentation

a) Discuss the importance of system documentation and the information it would contain.

b) Why is it important to identify the information requirements of a new system prior to building the system? Discuss this in terms of change management in IT implementation?

c) Differentiate between an incremental and a differential backup.

QUESTION 3 - Unix Basics and Shell Programming

a) Identify the errors in the shell script given below, and [i] write the correct code, and [ii] write the output of the corrected code when a user enters 4 for OS selection:

if [ $# -ne 3 ] then echo "$0: number1 number2 number3 are not given" >&2 exit 1 fi n1=$ n2=$2 n3=$3 if [ $n1-gt $n2] & [ $n1 -gt $n3] then echo $n1 is Bigest number" elif [ $n2 -gt $n1] && [ $n2 -gt $n3] then echo "$n2 is Bigest number" elif [ $n3 -g $n1 ] && [ $n3 -gt $n2] then echo "$n4 is Bigest number" elif [ $1 -eq $2 ] && [ $1 -eq $3 ] && [ $2 -eq $3] then else echo "All the three numbers are equal" echo "I can not figure out which number is biger"