$1.------------------------$ is software created to insert itself on a machine to subvert the security of the system

$-$ Windows

$-$ Linux

$-$ Comsys

$-$ Malware

$2.$ Which of these IPs is a loopback address?

$-127\mathrm{.}0\mathrm{.}0\mathrm{.}1$

$-127\mathrm{.}100\mathrm{.}0\mathrm{.}1$

$-172\mathrm{.}100\mathrm{.}0\mathrm{.}1$

$-172\mathrm{.}0\mathrm{.}0\mathrm{.}1$

$3.$ As a systems administrator how can you achieve buy in bulk, allocate fractions?

$-$ Grid

$-$ Cloud

$-$ Virtualization

$-$ None of the above

$4.$ What does the acronym VLAN stands for?

$-$ Vertical local area network

$-$ None of the above

$-$ Ventura local area network

$-$ Virtual local area network

$5.$ A $\_\_\_\_\_\_\_\_\_\_\_$ refers to a user interface that allows users to interact with an operating system or execute commands

$-$ Kernel

$-$ Switch

$-$ Shell

$-$ None of the above

$6.46.\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ regular users who are granted the ability to execute specific commands with superuser privileges.

$-$ sudo users

$-$ anonymous users

$-$ system users

$-$ remote users

$7.$ In IPv$4$ Addresses, classful addressing is replaced with

$-$ classless Addressing

$-$ classless Advertising

$-$ classful Addressing

$-$ classful Advertising

$8.$ In $\_\_\_\_\_\_\_\_\_\_\_\_$ communication, the data is addressed specifically to a particular destination device.

$-$ Multicast

$-$ Broadcast

$-$ None of the above

$-$ Unicast

$9.$ Which of the following is used for web communication and secure web browsing?

$-$ HTTP$/$HTTPS

$-$ DNS $($Domain Name System$)$

$-$ SMTP$/$POP$3/$IMAP

$-$ TCP$/$IP protocols

$10.$ In a dynamic configuration, the machine asks the network what its configuration parameters should be$.$ More diligently, it talks to a service on the network, which responds with those parameters. What is this service called in Internet Protocol versions $4$ and $6($IPv$4$ and IPv$6)?$

$-$ DHTCL

$-$ DNS

$-$ HTTPS

$-$ DHCP

$11.$ As long as software is being actively supported by the vendor, there will always be updates, often called $\_\_\_\_\_\_\_\_\_\_\_$

$-$ None of the above

$-$ Debugging

$-$ Patches

$-$ Primer

$12.$ The $4-$byte IP address consists of$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$-$ media address and host address

$-$ both network address and host address

$-$ host address

$-$ network address

$13.$ The $\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ is the core component of an operating system that acts as a bridge between software and hardware.

$-$ Cornel

$-$ Defender

$-$ Kernel

$-$ defragment

Implementing $\_\_\_\_\_\_\_\_\_\_\_$ ensures that individuals have only the level of access necessary for their specific job roles and responsibilities, reducing the risk of excessive privileges

RBCC

RBCA

RBAA

RBAC

Which of the following refers to the ability of a computer, product, or system to expand to serve a larger number of users without breaking down?

Disintermediation

Expandability

Scalability

Modality

The command chmod $654$ myfile grants $\_\_\_\_\_\_\_\_\_$ the permission to read and write but cannot execute myfile

Owner

Group

Others

Everyone

The OSI model has $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$layers

$4$

$5$

$6$

$7$

Which of these is a standard field in the $/$etc$/$passwd

All of the above

Home directory

Username

Login shell

A network that spans a city, and sometimes its major suburbs, as well, is called a

CAN

LAN

MAN

WAN

Which of these directories contains system$-$wide configuration files and scripts in Ubuntu?

$/$usr

$/$bin

None of the above

$/$etc

$----------------------$ represents a file with read, write, and execute permissions for the owner, read and execute permissions for the group, and read$-$only permissions for others.

$"$rw$\_$r$-$xr$--"$

$"$r$-$xr$-$xrwx$"$

$"$r$\_\_$r$-$xrwx$"$

$"$rwxr$-$xr$--"$

The network address of $172\mathrm{.}16\mathrm{.}0\mathrm{.}0/19$ provides how many subnets and hosts?

$7$ subnets, $2,046$ hosts each

$7$ subnets, $30$ hosts each

$8$ subnets, $2,046$ hosts each

$8$ subnets, $8,190$ hosts each

Which of the following is not a fundamental way to configure a storage?

Diskless

Foreign

Local

Stateless

Which of the following is not a characteristic of fungibility?

The files that need to be accessed should be stored on a workstation

The files that need to be accessed should be stored on network file servers

It should be possible for anyone with an account to log into any workstation

The applications the customers need should be immediately available

Which protocol can be used to monitor devices on a network?

DLNP

BNP

SNMP

None of the above

What service converts IP addresses into more recognizable alphanumeric names?

IP

FTP

HTML

DNS

A SAN is a $\_\_\_\_\_\_\_\_$ network.

Server area

Service$-$oriented architecture

Storage area

Scalable architecture

Which of these is not a duty of a system administrator?

None of the above

Install software

Create file systems

Monitor system performance

Certainly! Here are the questions along with the answer options:

$1.$ What is the command to remove read and write permissions for the group and others from a file?

$-`$chmod go$-$rw filename$`$

$-`$chmod gu$+$rw$`$

$-`$chmod gu$-$rw$`$

$-`$chmod go$-$r