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Random Access Memory Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM COMPUTER HARDWARE INTERVIEW QUESTIONS RANDOM ACCESS MEMORY INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Random Access Memory Interview Questions & Answers - Learning Mode

RAM (pronounced ramm) is an acronym for random access memory, a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes. RAM is the most common type of memory found in computers and other devices, such as printers. RAM (random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor.

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Random Access Memory Interview Questions & Answers - Learning Mode
Try Random Access Memory Interview Questions & Answers - Exam Mode
Question: Difference between static and dynamic RAM?


Answer: Static RAM: No refreshing, 6 to 8 MOS transistors are required to form one memory cell, Information stored as voltage level in a flip flop. Dynamic RAM: Refreshed periodically, 3 to 4 transistors are required to form one memory cell, Information is stored as a charge in the gate to substrate capacitance.

Static RAM: No refreshing, 6 to 8 MOS transistors are required to form one memory cell, Information stored as voltage level in a flip flop. Dynamic RAM: Refreshed periodically, 3 to 4 tra Source: CoolInterview.com
Question: What is the difference between 72 bit and 64 bit memory?

Answer: 72 bit memory is commonly known as ECC memory. It has an additional 8 bits for Error Correction Check 64 bit memory is non-ECC. 72 bit or 64 bit configuration are typically found in 168 pin DIMMs. Source: CoolInterview.com
Question: Design a 2-bit magnitude comparator and write itsRTL description also.


Answer: 8-bit Processor - 8085 / Z80 / 6800; 16-bit Processor - 8086 / 68000 / Z8000; 32-bit Processor - 80386 / 80486.
Source: CoolInterview.com
Question: Why 8085 processor is called an 8 bit processor?


Answer: Because 8085 processor has 8 bit ALU (Arithmetic Logic Review). Similarly 8086 processor has 16 bit ALU.
Source: CoolInterview.com
Question: What are the benefits of upgrading your computers memory?

Answer: Upgrading your memory is typically the easiest and least expensive way to upgrade your computer for a significant boost in performance. The computer's RAM memory is its workspace, or where all of the instructions it needs to act on are stored temporarily. Think of the RAM as the desk you use to sort through your work. If the size of that desk is small, your efficiency is limited in comparison to a larger desk that allows you to work more effectively and efficiently. Similarly, a computer wit Source: CoolInterview.com
Question: What's the difference between RDRAM and SDRAM?

Answer: RDRAM stands for Rambus Dynamic Random Access Memory. SDRAM stands for Synchronous Dynamic Random Access Memory. The two memories are completely different memory technologies and are not compatible with each other. RDRAM is a unique design developed by a company called Rambus, Inc. RDRAM is extremely fast and uses a narrow, high-bandwidth "channel" to transmit data at speeds much faster than SDRAM. Source: CoolInterview.com
Question: Why does microprocessor contain ROM chips?

Answer: Microprocessor contain ROM chip because it contain instructions to execute data.

in new technology many prosessors supports on the same socket {celeron, pentium}etc. so thatthe rom chip in the A is used to tel the I/o chip that what is the voltage required by the processor to get on and then the i/o chip give instruction to VRM ic to prepare the voltage for the processor to get on Source: CoolInterview.com
Question: What is Virtual Memory?

Answer: This is a method of extending the available physical memory on a computer. In a virtual memory system, the operating system creates a pagefile, or swapfile, and divides memory into units called pages. Recently referenced pages are located in physical memory, or RAM. If a page of memory is not referenced for a while, it is written to the pagefile. This is called "swapping" or "paging out" memory. If that piece of memory is then later referenced by a program, the operating system reads the memory Source: CoolInterview.com
Question: What does microprocessor speed depend on?

Answer: The processing speed depends on DATA BUS WIDTH.

Factors on which the Processor speed depends
1.Processor clock speed
2.Processor pipelining
3.Width of the data and address bus, i.e. Max Data that can be fetched at one stretch.
4.Support for floating point operations for faster floating point operations.

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Question: How do you know it's time for a memory upgrade?

Answer: There are several signs indicating it may be time to upgrade your memory. If you see your mouse pointer turn into an hourglass for significant periods of time, if you hear your hard drive working, or if your computer seems to work more slowly than you expect, the reason is probably insufficient memory. When physical memory is insufficient, the system uses Hard Disk Space as memory. This is called "Virtual Memory". Since access time of Physical memory is in tens of NanoSeconds and Access time of Source: CoolInterview.com
Question: Will adding more RAM make my Internet browsing faster?

Answer: Maybe. Internet browsing speed depends on a huge number of factors, including your connection speed, traffic on the site you're visiting, and the other components in your system. You will probably notice the biggest improvement from additional RAM if are viewing or working with large files (such as photos and digital audio and video) or if you switch between your browser and other applications often. Source: CoolInterview.com

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