MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

24-26 Chapter 24 Monitoring and Optimizing System Performance and Reliability
D. Incorrect: This is a common backup strategy, but it does not meet the requirement
of needing to restore only two sets of backups for a complete system recovery.
Each incremental backup copies only those files that were modified since the
prior night’s backup. Therefore, every single incremental backup since the last
normal backup must be restored to ensure total data recovery. For example, if a
normal backup was performed on a Sunday and incremental backups thereafter,
restoring the system on Thursday requires restoring Sunday’s normal backup and
Monday’s, Tuesday’s, and Wednesday’s incremental backups.
E. Correct: This backup strategy meets all the requirements. Differential backups
copy all files modified since the last normal backup, enabling a maximum of two
separate restores to completely rebuild a file system. For example, if a normal
backup was performed on a Sunday and differential backups thereafter, restoring
the system on Thursday requires restoring only Sunday’s normal backup and
Wednesday’s differential backup.
6. Correct Answers: B
A. Incorrect: Although it is a good idea to contact the manufacturer for the latest
drivers, a lack of a digital signature is not preventing Tom from installing the
driver. Instead, he is restricted by the limited permission set granted by his membership
in the Users group.
B. Correct: Normally, membership in the Backup Operators group is granted to
allow a user to read files that the user would normally not be allowed to access.
The group membership also gives the user the ability to install drivers for backup
devices. In this scenario, Tom’s user account lacks the necessary permissions to
install drivers. Adding Tom’s user account to the Backup Operators group gives
him the permissions necessary to install the driver without granting excessive
rights.
C. Incorrect: This would solve the problem because members of the Administrators
group do have the right to install drivers. However, Administrators have many
privileges that Tom does not need, which would create an unnecessary security
vulnerability.
D. Incorrect: Prior to the introduction of Plug and Play, many hardware problems
were resolved by disabling ports that used conflicting hardware interrupts. However,
serial ports and parallel ports generally do not conflict. Additionally, Jim’s
problem is related to his restrictive user rights, not hardware conflicts.
7. Correct Answers: B
A. Incorrect: Creating a restore point allows you to return to the current system
configuration in the future if a problem occurs. In this case, the problem has
already occurred, and it is too late to create a restore point.