Exatas

Brasil

Segurança da Informação

pt-br

Sistemas Operacionais

Sistemas Operacionais I é uma disciplina que aborda os conceitos fundamentais de sistemas operacionais, como gerenciamento de processos, gerenciamento de memória, gerenciamento de entrada e saída, sistemas de arquivos e segurança. Durante as aulas, os alunos aprendem sobre os diferentes tipos de sistemas operacionais, suas características e funcionalidades. A disciplina é importante para estudantes de Ciência da Computação e áreas afins, que precisam entender o funcionamento dos sistemas operacionais para desenvolver softwares e sistemas mais eficientes e seguros.

Exam

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Pergunta 2

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Ciência da Computação

Programas

Software de Sistema

Postgraduate

Universidade Estácio de Sá

CNT Nefrologia

Outros

Other

Which command shows, amongst other information, the IP address of the current DNS server for a Linux system?
show net dns
cat /etc/resolv.conf
cat ...

Which command shows, amongst other information, the IP address of the current DNS server for a Linux system?
show net dns
cat /etc/resolv.conf
cat /etc/net/dns.conf
ifconfig -v dns
cat /etc/net/nameserver.conf

Graduate

General Studies

Progresso com Exercícios: Compartilhando exercícios para auxiliar no progresso acadêmico e profissional em diversas áreas do conhecimento. Vamos juntos aprimorar nossos conhecimentos e alcançar o progresso através da prática e do estudo!

Progresso com Exercícios

Which of the following is a technology used to connect a hard drive directly to a computer's motherboard?
SATA
DSL
Ethernet
PCI
VGA

Which of the following commands can be used to extract content from a tar file?
tar -e
tar v
tar -c
tar -vf
tar -xvf

Which of the following possibilities is only available when using open source software?
Free use.
Access to its source code.
Download of all its ex...

Which of the following possibilities is only available when using open source software?
Free use.
Access to its source code.
Download of all its existing versions.
Access to its detailed help manual.

What is the command that will show system boot time messages?
display system boot
dmesg
messages
echo
lspci

Which network interface always exists in a Linux system?
wlan0
sit0
eth0
lo
vlan0

Which of the following statements is true for a Linux distribution used in an enterprise environment?
These distributions always contains the newes...

Which of the following statements is true for a Linux distribution used in an enterprise environment?
These distributions always contains the newest versions of all packages to minimize the time to market of new features.
These distributions contain proprietary business-related software.
These distributions are only affordable by large companies.
These distributions contain software versions that have proven to be stable even if it is not the recent version in order to minimize problems.

Which of the following hardware devices links a number of computers together to form an Ethernet LAN?
Server
Switch
Access point
Terminal
Connector

Which of the following filesystems is most commonly used for Linux distributions?
NTFS
FAT32
HFS+
ext4

Which of the following commands is used to look up the current IP address of a system?
showip
ipconfig
less /proc/net/ipconfig
ifconfig
sysinfo | g...

Which of the following commands is used to look up the current IP address of a system?
showip
ipconfig
less /proc/net/ipconfig
ifconfig
sysinfo | grep ipaddress

Given the following directory permissions: drwxrwxrwt 14 root root 36864 2012-03-02 11:17 /tmp What does the letter t at the end of drwxrwxrwt indi...

Given the following directory permissions: drwxrwxrwt 14 root root 36864 2012-03-02 11:17 /tmp What does the letter t at the end of drwxrwxrwt indicate?
It is the sticky bit that causes all commands in this directory to be launched as root.
It means that even though the directory is globally writable only the owner can delete their own files.
It indicates that this directory contains only temporary files that may be deleted.
It makes the directory accessible for everybody.
It is a temporary bit that prevents launching commands in this directory.

The script, script.sh, consists of the following lines: #!/bin/bash echo $2 $1 Which output will appear if the command, ./script.sh test1 test2, is...

The script, script.sh, consists of the following lines: #!/bin/bash echo $2 $1 Which output will appear if the command, ./script.sh test1 test2, is entered?
script.sh test1
test1 script.sh
test2 test1
script.sh test2
test1 test2

Which of the following is the home folder for the root user?
/root
/
/home/root
/user/root

Which command displays the list of groups to which a user belongs?
id
lsgroup
who
whoami

Given a file called birthdays containing lines like: YYYY-MM-DD Name 1983-06-02 Tim 1995-12-17 Sue Which command would you use to output the lines ...

Given a file called birthdays containing lines like: YYYY-MM-DD Name 1983-06-02 Tim 1995-12-17 Sue Which command would you use to output the lines belonging to all people listed whose birthday is in May or June?
grep 06 birthdays | grep 05
grep 05?6? birthdays
grep '[56]' birthdays
grep '[0-9]*-0[56]-' birthdays

What does the exit status 0 indicate about a process?
The process waited for an input but got none.
The process couldn't finish correctly.
The proc...

What does the exit status 0 indicate about a process?
The process waited for an input but got none.
The process couldn't finish correctly.
The process was terminated by the user.
The process ended without any problems.
The process finished in time.

When using a web browser, what should a user do to prevent private data from being stored locally?
Browsers can be configured to use a private mode...

When using a web browser, what should a user do to prevent private data from being stored locally?
Browsers can be configured to use a private mode that does not store any data locally.
There is no way to achieve that because Linux always logs network data.
Set up a second profile and use only that one to access sensitive sites.
Use the secure versions of the browser available.
Delete the profile directory in the home directory and create a new one after the work is done.

Identify the proper device for the third partition, on the second hard disk, on the first IDE controller on a PC system.
/dev/hdb3
dev/hdc1a3
dev/h...

Identify the proper device for the third partition, on the second hard disk, on the first IDE controller on a PC system.
/dev/hdb3
dev/hdc1a3
dev/hdc1b3
/dev/hd1b3
/dev/hdc1d2p3

Which of the following is an example of globbing?
ls /etc/ 2> files.txt
ls /etc/ > files.txt
ls /etc/*.txt
ls /etc/ | more

Where is the BIOS located?
LCD monitor
RAM
Motherboard
Hard drive

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Pergunta 2

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