Question 1

The init system in Linux has been replaced by what?

Accepted Answer

A)   SysDB
B)   systemd
C)   ProcMgr
D)   Lauchner B

Question 2

What are two primary variants of UNIX?

Accepted Answer

A)   AT&T and Bell Labs
B)   Sun and DEC
C)   BSD and System V
D)   Debian and Fedora C

Question 3

In shell scripting, what are backticks, or backwards single quote marks, used for?

Accepted Answer

A)   Shell escapes
B)   Variable dereference
C)   Command substitution
D)   Output formatting B

Question 4

The cd into a directory, you need what kind of permission?

Accepted Answer

A)   read
B)   write
C)   execute
D)   setuid

Question 5

In bash, a for loop will iterate over a list of strings separated by what?

Accepted Answer

A)   quotes
B)   single quotes
C)   backticks
D)   whitespace

Question 6

Which answer best describes three important system performance monitoring indicators?

Accepted Answer

A)   Load avg, idle CPU and swapping
B)   Uptime, load avg and idle CPU
C)   Load avg, idle CPU and free memory
D)   System CPU, user CPU and load avg
E)   Uptime, system CPU and free memory

Question 7

The fstab file contains what information?

Accepted Answer

A)   The runlevel of the system
B)   Currently mounted filesystems
C)   Filesystems to mount at boot
D)   NFS file systems mounted by users

Question 8

Why is iostat not needed on an Arista switch?

Accepted Answer

A)   The CPU can't see the front panel interfaces to report on traffic
B)   EOS is installed on an in-memory filesystem that does not use a hard disk
C)   The memory is always full on an Arista switch
D)   The I/O on an Arista switch is too fast for the CPU
E)   Arista switches don't support hyperthreading

Question 9

The standard output file descriptor defaults to what?

Accepted Answer

A)   Screen
B)   Keyboard
C)   Hard Drive
D)   Null Device

Question 10

Which of the following filesystems are you most likely to see on a Linux system?

Accepted Answer

A)   XFS
B)   ext2fs
C)   NTFS
D)   exFAT

Question 11

Which native system commands can be used to get help on a standard Linux system?

Accepted Answer

A)   Google
B)   Info
C)   Man
D)   Stack Overflow

Question 12

In a bash script, which of the following is the most common way to send output to the screen?

Accepted Answer

A)   echo
B)   write
C)   send
D)   print

Question 13

What term is used for the beginning of time for UNIX?

Accepted Answer

A)   Epoch
B)   Zero-hour
C)   Birth
D)   Dawn
E)   Awakening

Question 14

Which of these shells are POSIX compliant?

Accepted Answer

A)   bash
B)   ksh
C)   csh
D)   zsh

Question 15

Which of these is true about the MBR?

Accepted Answer

A)   it contains the kernel
B)   it is not OS-specific
C)   it requires the Volume Boot Record
D)   it is always stored in memory

Question 16

Where did the GECOS field in /etc/passwd come from?

Accepted Answer

A)   Bell Labs DHCP lease tracking
B)   Payroll name and address info
C)   Bell Labs Print Service
D)   Parking space assignments at AT&T

Question 17

The netstat command can be used to report on which of the following items?

Accepted Answer

A)   Routing table entries
B)   Network interface statistics
C)   CPU idle %
D)   Free memory
E)   Open sockets

Question 18

On older Fedora Core systems, which dependency manager is used?

Accepted Answer

A)   apt
B)   deb
C)   rpm
D)   yum
E)   dnf

Question 19

Who invented NFS?

Accepted Answer

A)   Linus Torvalds
B)   IBM
C)   DEC
D)   Sun Microsystems

Question 20

According to the UNIX design paradigm, what is a file?

Accepted Answer

A)   Something that stores data
B)   An inode
C)   A directory
D)   Everything

Exam 2: Arista Linux Essentials Exam