What is Cache memory?
- A.Buffer memory situated between the CPU and RAM
- B.Buffer memory situated between the CPU and ROM
- C.Buffer memory situated between the ROM and RAM
- D.Buffer memory situated between the CPU and MOS
Correct answer
Explanation
The correct answer is A, Buffer memory situated between the CPU and RAM. Cache is a small, very fast memory that sits between the processor and the main memory and holds the instructions and data the processor has used most recently. Because reading from RAM is slower than the speed at which the CPU works, the cache saves the processor from waiting, and a request that is served from it is called a cache hit. It is built from static RAM and is arranged in levels, L1 inside the core, then L2 and the shared L3, growing larger and slower at each step. Option B is wrong because ROM holds permanent start-up instructions and is not the memory the cache speeds up. Option C is wrong because the cache serves the CPU, not the path between ROM and RAM. Option D is wrong because MOS names a transistor technology, not a memory unit. Exam tip: speed order registers, cache, RAM, secondary storage.
Practice Questions
View allWhich language uses the symbolic representation of machine codes needed to program a particular processor or processor family?
- A.Machine Language
- B.Assembly Language
- C.High-Level Language
- D.All of the above
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Assembly language replaces the binary machine codes of a processor with short symbols called mnemonics, such as MOV, ADD and JMP.
Read the full explanation →Which one of the following is the characteristic of Artificial Intelligence ?
- A.Replicates human decision making
- B.Stores relevant information
- C.Stores similar kind of data for a specific purpose
- D.Allows user to interact with media
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Read the full explanation →What is an interactive combination of text, graphics, video, audio and images termed as ?
- A.JPEG
- B.Multimedia
- C.AVA
- D.PNG
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Multimedia means using several forms of media, such as text, graphics, audio, video, images and animation, together, often in a way the user can interact with.
Read the full explanation →Which among the following is a malicious software?
- A.Hacking
- B.Password Cracking
- C.Trojan Horse
- D.Firewall
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A Trojan is a program that looks useful or harmless but secretly carries harmful code, so it is a piece of malicious software, or malware.
Read the full explanation →Which one of the following is not an application software?
- A.Spreadsheet
- B.AutoCAD
- C.MS PowerPoint
- D.Linker
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A linker is system software, a programming tool that joins compiled pieces of code into one program that can run; it does not do a task for the end user.
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