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COP 4600 EXAM 1 QUESTIONS AND ANSWERS 100% CORRECT
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COP 4600 EXAM 1 QUESTIONS AND ANSWERS 100% CORRECTWhat hardware components does a CPU comprises? - ANSWER Registers, ALU, and
control unit
Hardware that serves as the memory for the CPU. These are used for special and
general purposes - ANSWER Registers
Hardware that does arithmetic and performs logical calculations - ANSWER ALU
Hardware that maintains state/status. Also, responsible for controlling other
components - ANSWER Control unit
Instruction cycle in charge of loading the instruction - ANSWER Fetch
Instruction cycle responsible for determining the opcode/operands of the instruction
and interpreting it - ANSWER Decode
Instruction cycle responsible for executing the instruction - ANSWER Execute
Protected instructions can only be executed in a ____________ - ANSWER Protected state
Legacy boot process - ANSWER BIOS
What does BIOS stand for? - ANSWER Binary Input Output System
The ________ bootstraps the boot sector - ANSWER Bootloader
,What does bootstrap mean? - ANSWER Loading up the computer
Why are the bootsector and bootloader separate? - ANSWER Bootsector is too small
Where is the BIOS init stored? - ANSWER The motherboard
What boot process is usable on x86-64 (i386) standalone PCs? - ANSWER BIOS
What boot process has standard for ARM chipset systems? - ANSWER Neither
Which boot process has standardized NVRAM locations for system variables? -
ANSWER UEFI
Which of the following boot process uses a dedicated bootloader partition? - ANSWER
BIOS
Which of the following boot process isusable with x86-64 (x64) stand-alone PCs? -
ANSWER Both
Newer boot process - ANSWER UEFI
Which of the following boot process makes diskless systems easier? - ANSWER UEFI
Name some of the functions of an OS. - ANSWER Loading programs onto machine,
controlling I/O devices, managing resources memory and CPU, multi-tasking execution,
data protection - permissions and task interaction - pipes, networking
Operating mode for kernel's direct manipulation of hardware - ANSWER Kernel mode
, T/F: None of the devices is directly accessed w/o the kernel - ANSWER True
T/F: System calls can be invoked only by system libraries - ANSWER False
T/F: A system call invokes a code written by system developers, whereas a procedure
call invokes code written by an application programmer - ANSWER False
A running program is in _____ - ANSWER Execution
When a program is executed we create for that program a _________ - ANSWER Process
Features of a process - ANSWER Has some address space, associated with particular
resources, computational element/ object and has at least one thread of execution
When we make a _______, we add on the call stack a stack frame - ANSWER Procedure
call
Which pointer points to the start of the stack frame? - ANSWER Frame pointer
Which pointer points at the start of the call stack? ANSWER Stack pointer
A _________ entails a switch into kernel mode for execution ANSWER System call
Invocation of a system call causes a what? ANSWER Kernel trap
What must be stored in a kernel trap? ANSWER Current address, registers, etc
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