Question $3$

$[24$ marks$]$

$2$

HSYD$202-1-$July$-$Dec$2024-$FA$1-$V$2-$TSS$-24062024$

$3\mathrm{.}1.$ Appraise the concept of symmetric encryption and hashing then compare their

roles in ensuring data security.

$(12$ marks$)$

$3\mathrm{.}2.$ As a security professional responsible for managing a PKI infrastructure, you must

ensure digital certificates' integrity and security. Classify the importance of certificate

revocation in a PKI infrastructure.

$(12$ marks$)$