Exam all

To override the interactive option, which is known as interactive mode, use the option to override the choice.

-f

What directory on a Linux system is commonly used to store log files and spools?

/var

Which kill signal number is associated with the kill command by default?

15

What TCP port number is used for Telnet communications?

23

What port number is used for the e-mail service?

25

What is the maximum number of characters in a Linux filename?

255

What vi command mode command allows you to move the cursor to line 64 of a file?

64G

On what port number will the Apache daemon listen for HTTP requests?

80

What vi command would be used to save changes to a file and quit from the vi editor?

:wq

Which metacharacter is used for command termination?

;

What is the most common media source used to install Linux?

A DVD

Which of the following IP address classes can be used to subnet a network?

A,B,C

Which term refers to the process whereby each user must log in with a valid user name and password before gaining access to the user interface of a system?

Authentication

Which keystroke combination should be used to access the tty3 terminal?

Ctrl-FAlt+F3

Which service provides IP configuration for computers on a network?

DHCP

The packet sent by a DHCP server that contains a potential IP configuration is known as which of the following?

DHCPOFFER

Which service resolves IP addresses to FQDNs?

DNS

What should be the last step of any troubleshooting procedure?

Document the solutiom

DNS can be used to map which of the following types of names to IP addresses?

FQDNS

Which FTP command allows you to download a file using wildcard metacharacters?

False

Under which licensing model is Linux made available?

GPL

Which of the following is the standard boot loader used on Linux systems?

GRUB

A task-specific instruction guide to performing a wide variety of tasks that is freely available from the Linux Documentation Project is known as which of the following?

HOWTO documents

Which e-mail service is responsible for sending messages between services?

MTA

Which environment variable is used to control the directories that are searched when a command is used with providing an absolute or relative reference? Selected Answer.

PATH

Which wildcard metacharacter stands for all the files in the current directory?

Parallel Advanced Technology Attachment (PATA)

Which of the following RAID levels is associated with a stripe set with parity?

RAID 5

Which term refers to a series of kernel patches and utilities created by the National Security Agency (NSA) that enforce security on your system using policies that prevent applications from being used to access resources and system components in insecure ways?

SElinux

Which of the following is a program that can start a network daemon and provide extra security by allowing you to restrict network services from being accessed by certain hosts?

TCP wrapper

What would be the result of not configuring an /etc/at.allow file on a Fedora Linux system?

The /etc/at.deny file would be processed.

What does the PPID of a process identify?

The PID of a parent process

Which filesystem includes volume management software designed for large-scale Linux systems that need to store data on multiple disks, SANs, and remote systems?

ZFS

What escape character will add a vertical tab to the screen if issued within a script?

\

What command can be issued to view all jobs scheduled with the at command?

at -l

Which command can be used to view an entire text file called project4 along with line numbers for each line of text?

cat -n project4

What command is used to change the group ownership of a file or directory?

chgrp

Which command can be used to change the root of the live OS to the /mnt directory?

chroot

Which of the following are a collection of programs and tools designed to allow for the creation, modification, maintenance, and access of information from databases?

database management systems

What is the third column in the cron table used to represent?

day of the month

Which of the following must be used to send a packet to a destination on a different network?

default gateway

Which command can be used to test name resolution?

dig

Which command will display all hardware detected during the latest boot of Linux?

dmesg

Which of the following can be found in -/.ssh/known_hosts?

encryption fingerprint

A partition on a hard disk that can be further subdivided into components called logical drives is known as which type of partition?

extended partition

Which of the following terms best describes the act of creating a new BASH shell child process from a parent BASH shell process?

forking

Which grep command would be issued to view the contents of a file except the lines that include the word "hello"?

grep -v

Which of the following technologies uses network cables to transfer data to and from remote hard disks that reside within a SAN or remote system?

iSCSI

The OS component which loads all other components and serves to centrally control the activities of the computer is known as which of the following?

kernel

Which term refers to the issue where a network is properly configured, but the time it takes for network services to respond to requests is very high, or users receive occasional timeout errors when attempting to connect to a network service?

latency

Which of the following can be used to boot a computer to a fully functional graphical Linux OS that a user can use to ensure all hardware drivers were detected properly?

live media dvd

Which command can be used to view hidden files in Linux?

ls -a

By comparing the output of the dmesg, lshw, lsusb, and lspci command to the output of the ________ command, you can determine whether a driver module is missing for a hardware device in your system.

lsmod

Which command is used to only view USB devices detected by the Linux kernel?

lsusb

What command can be used to manage your software RAID configuration after installation?

mdadm

What is represented by the second number in the Linux kernel version 2.3.4?

minor number

How many Serial Attached SCSI hard disks can be connected to a single SCSI controller?

more than 50,000

Which of the following commands can be used to move a file to the same directory but with a different filename?

mv file1 file2

Which component of the Linux kernel can be used to configure a firewall on your Linux computer?

netfilter

Which value can be configured to influence the priority of a process?

nice value

Which command lists the services currently running on the system?

nmap

Which file is used to configure the name resolution order on a Linux server?

nsswitch.conf

What command is used to test for basic connectivity between hosts?

ping

What term is used to describe a running program on Linux?

process

Which of the following terms best describes a set of rules of communication used between computers on a network?

protocol

What Internet service provides content caching services for clients?

proxy

Which command can be used to view the most information about each process running on a system?

ps -l

Which command will display the current working directory onscreen?

pwd

What command should be added to a shell script in order for the script to read information from the standard input?

read

What permissions would be removed from new files given the command umask 402?

read for the owner, none for the group, and write for others

what permissions are associated with the file owner?

read, write, and execute

What command is used to delete an empty directory on a Linux system?

rmdir

Which term describes a process that has encountered an error during execution and continuously uses up system resources?

rogue process

The ability for a computer to increase workload as the number of processors increase is known as

scalability

Which filter command can be used to search and replace a certain string of text?

sed

Which of the following describes a type of closed source license which is distributed free of charge, yet after a certain number of hours of usage or to gain certain features of the program, payment is required?

shareware

What term is used to describe text that is input by a user typing on a keyboard and is used for command execution?

stdin

Which command can be used to search for text characters in a binary file and output them to the screen?

strings

Which command is used to switch the current user account to another account?

su

Which of the following is a pointer to another file on the some or another filesystem?

symbolic link

Which command can be used to transform or change characters received from Standard Input?

tr

A common utility used to troubleshoot routing is known as which of the following?

traceroute

True or False. A negative nice value increases the likelihood that the process will receive more time slices, giving it more time to use the CPU.

true

True or False: By default, the NTP daemon is not configured as an NTP server.

true

True or False:You can combine redirection and piping, as long as input redirection occurs at the beginning of the pipe and output redirection occurs at the end of the pipe.

true

Which command is used to increase the number of processes that users can start in a shell?

ulimit

In order to update the database used for the locate command, which of the following commands can be issued?

updated

Which command can be issued to view all users currently logged on to a server and their tasks?

w

Which command can be used to transform er change characters received from Standard Input?

while

Which of the following constructs would you use to execute a command repetitively?

while

To obtain registration information about any domain within the Domain Name Space, which of the following commands would be used?

whois

Which of the following commands can be used to manage the specific features of the ZFS filesystem stored within ZFS volumes?

zfs

Which metacharacter is used to pipe the results of one command to another?

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