Week 6 Comprehension

Question 1

What is system rescue?

• The process of using a live OS to repair problems associated with the live OS.
• The process of using a live OS to repair problems on another Linux system installed on a separate disk.
• The process of using the installed tools on the current system to repair problems associated with the current system.
• The process of saving power on the current system.

Answer 1

The process of using a live OS to repair problems on another Linux system installed on a separate disk.

Question 2

Today, web, mail, print, and other services are run on physically separate enterprise servers.

True/False

Answer 2

False

Question 3

Which of the hypervisors below are type 2? (Select two)

• Citrix Xen
• Microsoft Hyper-Drive
• VMware Workstation
• VMware ESXi
• Oracle Virtual Box

Answer 3

• VMware Workstation

- Oracle Virtual Box

Question 4

What does the dmesg command do?

• Analyzes core dump files
• Delete log files
• Displays messages generated by device drivers
• Detaches message

Answer 4

Displays messages generated by device drivers

Question 5

Which are typically loaded into the Linux kernel as a module? (Select three)

• Graphics card
• NIC
• SATA drives
• Motherboard chipset

Answer 5

• Graphics card
• NIC
• Motherboard chipset

Question 6

What command do you use to check whether a module is installed?

• chckmod
• infomod
• lsmod
• testmod

Answer 6

-lsmod

Question 7

Find the match.

1- Supported by Linux
2- Most SAN implementation
3- Implemented by BIOS

a-Firmware RAID
b-Software RAID
c-Hardware RAID

Answer 7

1/b
2/c
3/a
1- Supported by Linux b-Software RAID
2- Most SAN implementation c-Hardware RAID
3- Implemented by BIOS a-Firmware RAID

Question 8

BTRFS is currently being developed to become a replacement for ext4.

T/F

Answer 8

True

Question 9

Match
1-RAID0
2-RAID1
3-RAID5
4-RAID6

a-Performance improvement but no protection
b- Complete replica of another disk
c-Withstand up to one disk loss
d-Withstand up to two disk losses

Answer 9

1/a
2/b
3/c
4/d
1-RAID0 a-Performance improvement but no protection
2-RAID1 b- Complete replica of another disk
3-RAID5 c-Withstand up to one disk loss
4-RAID6 d-Withstand up to two disk losses

Question 10

Which statements describe a hypervisor? (Select two)

• Only Available on Linux servers
• Offers physical redundancy on a single piece of hardware
• Enables virtual machines to access virtualized hardware
• Allows multiple instances of OSs to run simultaneously on one physical server

Answer 10

• Enables virtual machines to access virtualized hardware

- Allows multiple instances of OSs to run simultaneously on one physical server