WGU C952 Computer Architecture Indispensable Study Assessment Guide Exam Questions with all Questions Accurately Answered Updated 2024/2025
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WGU C952 Computer Architecture
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WGU C952 Computer Architecture
WGU C952 Computer Architecture Indispensable Study Assessment Guide Exam Questions with all Questions Accurately Answered Updated 2024/2025
Register file - correct answer a state element that consists of a set of registers that can be read and written by supplying a register number to be accesse...
WGU C952 Computer Architecture Indispensable Study
Assessment Guide Exam Questions with all Questions
Accurately Answered Updated 2024/2025
Register file - correct answer a state element that consists of a set of registers that can
be read and written by supplying a register number to be accessed.
Provides 1024 scalar 32-bit registers for up to 64 threads.
Machine language - correct answer the language made up of binary-coded instructions
that is used directly by the computer
System software - correct answer the set of programs that enables a computer's
hardware devices and application software to work together; it includes the operating
system and utility programs.
Operating system - correct answer (computer science) software that controls the
execution of computer programs and may provide various services
Assembly language - correct answer programming language that has the same
structure and set of commands as machine languages but allows programmers to use
symbolic representations of numeric machine code.
Ibm 360/91 - correct answer introduced many new concepts, including dynamic
detection of memory hazards, generalized forwarding, and reservation stations.
Tomasulo's algorithm
The internal organization of the 360/91 shares many features with the pentium iii and
pentium 4, as well as with several other microprocessors. One major difference was that
there was no branch prediction in the 360/91 and hence no speculation. Another major
difference was that there was no commit unit, so once the instructions finished
execution, they updated the registers.
,Dynamic random access memory (dram) - correct answer memory built as an
integrated circuit; it provides random access to any location. Access times are 50
nanoseconds and cost per gigabyte in 2012 was $5 to $10.
Multiple drams are used together to contain the instructions and data of a program. In
contrast to sequential access memories, such as magnetic tapes, the ram portion of the
term dram means that memory accesses take basically the same amount of time no
matter what portion of the memory is read.
Modern drams consist of rows in each bank
Frame buffering - correct answer a portion of ram containing a bitmap that drives a
video display. It is a memory buffer containing a complete frame of data.
The image to be represented onscreen is stored in the frame buffer, and the bit pattern
per pixel is read out to the graphics display at the refresh rate. The animation below
shows a frame buffer with a simplified design of just 4 bits per pixel.
Datapath - correct answer the component of the processor that performs arithmetic
operations
Control - correct answer the component of the processor that commands the datapath,
memory, and i/o devices according to the instructions of the program.
Integrated circuit - correct answer also called a chip. A device combining dozens to
millions of transistors.
Central processor unit (cpu) - correct answer also called processor. The active part of
the computer, which contains the datapath and control and which adds numbers, tests
numbers, signals i/o devices to activate, and so on.
Static random access memory (sram) - correct answer also memory built as an
integrated circuit, but faster and less dense than dram.
,Instruction set architecture - correct answer also called architecture. An abstract
interface between the hardware and the lowest-level software that encompasses all the
information necessary to write a machine language program that will run correctly,
including instructions, registers, memory access, i/o, and so on.
Application binary interface (abi) - correct answer the user portion of the instruction set
plus the operating system interfaces used by application programmers. It defines a
standard for binary portability across computers.
Volatile memory - correct answer storage, such as dram, that retains data only if it is
receiving power.
Nonvolatile memory - correct answer a form of memory that retains data even in the
absence of a power source and that is used to store programs between runs. A dvd disk
is nonvolatile.
Magnetic disk - correct answer also called hard disk. A form of nonvolatile secondary
memory composed of rotating platters coated with a magnetic recording material.
Because they are rotating mechanical devices, access times are about 5 to 20
milliseconds and cost per gigabyte in 2012 was $0.05 to $0.10
Main memory - correct answer also called primary memory. Memory used to hold
programs while they are running; typically consists of dram in today's computers.
Secondary memory - correct answer nonvolatile memory used to store programs and
data between runs; typically consists of flash memory in pmds and magnetic disks in
servers.
Flash memory - correct answer a nonvolatile semiconductor memory. It is cheaper and
slower than dram but more expensive per bit and faster than magnetic disks. Access
times are about 5 to 50 microseconds and cost per gigabyte in 2012 was $0.75 to
$1.00.
, Single instruction single data (sisd) - correct answer a uniprocessor
Multiple instruction multiple data (mimd) - correct answer a multiprocessor.
Single program, multiple data streams (spmd) - correct answer the conventional mimd
programming model, where a single program runs across all processors.
Single instruction stream, multiple data streams (simd) - correct answer the same
instruction is applied to many data streams, as in a vector processor.
Data-level parallelism - correct answer parallelism achieved by performing the same
operation on independent data
Vector-based code - correct answer
Conventional code - correct answer
Legv8 - correct answer assembly instructions
Multimedia extensions (mmx) - correct answer an expanded set of instructions
supported by a processor that provides multimedia-specific functions.
Data hazard (pipeline data hazard) - correct answer when a planned instruction cannot
execute in the proper clock cycle because data that is needed to execute the instruction
are not yet available.
Forwarding (bypassing) - correct answer a method of resolving a data hazard by
retrieving the missing data element from internal buffers rather than waiting for it to
arrive from programmer-visible registers or memory
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