WGU C952 Computer Architecture Study test in depth Examination and 100% correctly verified Solutions Latest version 2024/2025
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WGU C952 Computer Architecture
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WGU C952 Computer Architecture
WGU C952 Computer Architecture Study test in depth Examination and 100% correctly verified Solutions Latest version 2024/2025
Hit rate - correct answer (or hit ratio) the fraction of references that hit.
Miss rate - correct answer (or global miss rate, miss ratio) the fraction of references t...
WGU C952 Computer Architecture Study test in depth
Examination and 100% correctly verified Solutions
Latest version 2024/2025
Hit rate - correct answer (or hit ratio) the fraction of references that hit.
Miss rate - correct answer (or global miss rate, miss ratio) the fraction of references
that miss.
Hit time - correct answer the time cost of accessing the cache when a hit occurs. It
includes the time needed to determine whether the access is a hit or miss.
Global miss rate - correct answer the fraction of references that miss in all levels of a
mutlilevel cache.
Local miss rate - correct answer the fraction of references to one level of a cache that
miss; used in multilevel hierarchies.
Fault avoidance - correct answer preventing fault occurrence by construction.
Fault tolerance - correct answer using redundancy to allow the service to comply with
the service specification despite faults occurring.
Fault forecasting - correct answer predicting the presence and creation of faults,
allowing the component to be replaced before it fails.
Protection - correct answer a set of mechanisms for ensuring that multiple processes
sharing the processor, memory, or i/o devices cannot interfere, intentionally or
unintentionally, with one another by reading or writing each other's data. These
mechanisms also isolate the operating system from a user process.
Page - correct answer virtual memory block
,Reference bit - correct answer also called use bit or access bit. A field that is set
whenever a page is accessed and that is used to implement lru or other replacement
schemes.
Registers - correct answer registers are primitives used in hardware design that are
also visible to the programmer when the computer is completed, so you can think of
registers as the bricks of computer construction. The size of a register in the legv8
architecture is 64 bits; groups of 64 bits occur so frequently that they are given the
name doubleword in the legv8 architecture. (another popular size is a group of 32 bits,
called a word in the legv8 architecture.)
Vector based code - correct answer the basic philosophy of vector architecture is to
collect data elements from memory, put them in order into a large set of registers,
operate on them sequentially in registers using pipelined execution units, and then write
the results back to memory. A key feature of vector architectures is therefore a set of
vector registers. Thus, a vector architecture might have 32 vector registers, each with
64 64-bit elements. Generally, vector architectures are a very efficient way to execute
data parallel processing programs; they are better matches to compiler technology than
multimedia extensions; and they are easier to evolve over time than the multimedia
extensions to the x86 architecture.
Register file - correct answer a register file is an array of processor registers in a
central processing unit (cpu).
Overflow - correct answer when a positive value becomes too large to fit in the
provided space.
Virtual memory - correct answer a technique that uses main memory as a "cache" for
secondary storage
Physical address - correct answer an address in main memory
Page fault - correct answer when an accessed page is not present in main memory.
, Virtual address - correct answer use a 48-bit virtual address. Why not 64? All 64 are
available to the hardware, but 48 bits give address space of 256 terabytes -much more
than needed! 64 would be way too much. So cpu manufacturers took the shortcut of
using only the lower 48.
Address translation - correct answer (address mapping) the process of mapping a
virtual address to an address in memory.
Segmentation - correct answer a variable-size address mapping scheme in which an
address consists of two parts: a segment number, which is mapped to a physical
address, and a segment offset.
Page table (or map) - correct answer the table containing the virtual to physical
address translation in a virtual memory system.
Swap space - correct answer the space on the disk reserved for the full virtual memory
space of a process
Virtually addressed cache - correct answer a cache that is accessed with a virtual
address rather than a physical address
Aliasing - correct answer a situation in which two addresses access the same object; it
can occur in virtual memory when there are two virtual addresses for the same physical
page
Physically addressed cache - correct answer a cache that is adressed by a physical
address
Supervisor mode - correct answer also called kernel mode. A mode indicating that are
running processes and operating system process
Hypervisor software - correct answer the software that supports vms; the heart of vm
technology. The vmm determines how to map virtual resources to physical resources.
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