
Quiz sobre Chamadas de Sistema
Authored by Alan Veloso
Information Technology (IT)
University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
O que são Chamadas de Sistema?
Instruções executadas diretamente pelo hardware.
Interface entre programas em modo usuário e o sistema operacional em modo kernel.
Funções que apenas dispositivos de E/S podem executar.
Métodos para reiniciar o processador.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qual mecanismo é utilizado para realizar uma Chamada de Sistema?
Interrupções de hardware.
Traps (interrupções de software).
Acesso direto ao barramento.
Reinicialização do sistema.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qual é a diferença principal entre uma Interrupção e uma Trap?
Interrupções são causadas por software, e Traps por hardware.
Interrupções são externas (hardware), enquanto Traps são internas (software).
Traps são usadas apenas pelo relógio do sistema.
Interrupções são sempre priorizadas sobre Traps.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qual API é comumente associada a sistemas UNIX para Chamadas de Sistema?
Win32 API
Java API
POSIX API
BIOS API
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quando um dispositivo de E/S finaliza uma tarefa, o que ele envia ao barramento?
Uma mensagem de erro.
Um sinal de Trap.
Uma interrupção de hardware.
Uma chamada direta à CPU.
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