Mod 8 Day 2

Question 1

Linux command used to view system calls accessed during the execution of a command

Answer 1

Strace

Question 2

File from where init daemon gets its instructions

Answer 2

etc/inittab

Question 3

Sets or prints the limits imposed on files written by the shell and its processes

Answer 3

Ulimit

Question 4

Linux process that monitors the console for login request

Answer 4

Getty or mingetty

Question 5

Command used to verify current run level

Answer 5

Who -r

Question 6

Solaris process that monitors the console for logon request

Answer 6

Ttymon

Question 7

File where Master copies of the startup scripts reside

Answer 7

/etc/init.d

Question 8

Command used to view system calls access during execution of a command on a Solaris system

Answer 8

Truss

Question 9

This system call return system information about the platform

Answer 9

Uname

Question 10

*nix command used to change current run level

Answer 10

Init

Question 11

Action within the inittab used for system initialisation; e.g. checks file systems, activate Swap, and sets hostname

Answer 11

Sysinit

Question 12

This Linux command list current startup information and changes start up information for services. It also manages xinetd scrips via the configuration files in /etc/xinetd.d

Answer 12

Chkconfig

Question 13

Similar to Windows Task Manager this *nix tool is used to view system processes and their states

Answer 13

Ps

Question 14

Allows a device driver or any other kernel service to be linked into and removed from the kernel while it’s running

Answer 14

LKM (loadable kernel modules) support

Question 15

Solaris command that list modules currently loaded

Answer 15

Modinfo

Question 16

The Solaris kernel is configured at boot time and can be modified by user. Where are the settings located?

Answer 16

etc/system file

Question 17

Solaris command used to display kernel parameters and values

Answer 17

Sysdef

Question 18

Linux command used to display status of loadable Kernel modules

Answer 18

Lsmod

Question 19

Linux command used to see all possible kernel parameters

Answer 19

Sysctl -a

Question 20

Linux file where all kernel values are loaded when system boots

Answer 20

/etc/sysctl.conf

Question 21

Process Interruption caused by some event external to the current running process. A signal generated by the hardware.

Answer 21

Interrupt

Question 22

Error or exception condition generated within current running process, software written to catch an exception generated by the CPU.

Answer 22

Trap

Question 23

Used to view current running processes and their states

Answer 23

PS -elf

Question 24

This performs a power-on self-test in the MBR is executed from /etc/rc.d/rd*.d and spawns a login.

Answer 24

Basic input / output phase BIOS

Question 25

This is the single most important piece of software on the system, it's dynamically configurable with the capability to make changes during boot. Executes /sbin/init

Answer 25

GRUB

Question 26

The default run level in Solaris is __ and in Linux it is __

Answer 26

3 | 5

Question 27

A directory for each run level is located in

Answer 27

/etc/rc.d directory

Question 28

The ___ is a utility; a script that controls the automatic boot process after being called by init.

Answer 28

rc (run control) script

Question 29

User limits imposed on resources are set in?

Answer 29

/etc/security/limits.conf

Question 30

Unix does not apply a system call that creates a new process running a particular program, instead an existing process clones itself to create a new process by using the fork system call

Answer 30

Parent PID

Question 31

Kernel assigns a unique ID number to every process

Answer 31

Process ID PID

Question 32

these files are created either when an executing process is terminated by a kill signal or when something goes wrong during process execution

Answer 32

Core dump files

Question 33

What are the three characteristics of core files

Answer 33

Size Purpose Security

Question 34

This is determined by the amount of memory consumed by a process during its execution

Answer 34

Core file size

Question 35

______ ______ are intended to debug application programs to identify problems

Answer 35

Core files purpose