by Re-Searcher...

Amazon Public Cloud Design Pattern: Template

Objective: To provide ready to use environment.

Application of Cloud: Applications need environment to run. It requires web server / application server / database server normally. To install all software and make it available to deploy an application successfully takes lot of time in either virtual or physical environment.

The benefit of Cloud / Virtual environment is that, you can create a template in which OS, application server, application etc. are already installed and from that you can create new instances within minutes and you need not to install everything every time it fails. Do it properly once and use it to create similar kind of virtual machine in future. User needs to create baseline instance and from that new virtual machines can be created and it can be configured as per requirement. That is called template.

Implementation on AWS:

As we have seen in Amazon Public Cloud Design Pattern: Snapshots, EBS Disk which is Boot Disk, can be used to create multiple virtual machine with same settings. Launch an EC2 Instance and install all software you need to run application, configure that instance properly; Capture that Amazon Machine Image and use it to create multiple EC2 instances with similar settings.

Template Pattern Amazon Public Cloud

Amazon Public Cloud Design Pattern: Snapshots (clean-clouds.com)
Overview – Elastic IP in AWS (Amazon Public Cloud) in One Minute (clean-clouds.com)

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09.12.12

by Re-Searcher...

MCQs On Computer Fundamentals Part-2

Multi Choice Questions On Computer Fundamentals, Database, Networking, OS, DFS (Compilation)

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: Computer Basics – Free Quick Reference Card

This Computer Basics Quick Reference provides an overview of general computer concepts, file management, and tips for usage. This reference is great for beginners or anyone looking to brush up on the basics.

Storage capacity of magnetic disk depends on	Tracks per inch of surface Bits per inch of tracks Disk pack in disk surface
Reading data is performed in magnetic disk by	Read/write leads
Access time is	Seek time + latency time
Seek time is	Time to position the head over proper track
Latency time is	Time to spin the needed data under head
Floppy disks are available in	Single side single density Single side double density
Floppy disks typically in diameter	3” 5.25” 8”
Hard disk is coated in both side above	Magnetic metallic oxide
Binary circuit elements have	Two stable state
Which statement is valid	1kb = 1024 bytes
Which statement is valid about computer program?	It is understood by a computer It is understood by programmer It is understood user
Software in computer	Enhances the capabilities of the hardware machine
Which of the following is not computer language?	Medium level language
Which language is directly understood by the computer without translation program?	Machine language
Instruction in computer languages consists of	Opcode Operand
Machine language is	Machine dependent Difficult to program Error prone
Ibm 7000 digital computer	Employs semiconductor memory
The proper definition of a modern digital computer is	A machine that works on binary code
A modern electronic computer is a machine that is meant for	Input, storage, manipulation and outputting of data
An integrated circuit is	Fabricated on a tiny silicon chip
Most important advantage of an ic is its	Extremely high reliability
In a punched card system, data is processed by a	Accounting machine, keypunch machine and sorter
The first machine to successfully perform a long series of arithmetic and logical operations was;	Mark i
In the third generation of computers:	On-line, real time systems first became popular
A characteristic of card systems is:	Slowness in processing data Using cards as records of transactions Needing a larger dp staff
An ibm system/38 represents the computer class of:	Small-scale computer
The first firm to mass- market a microcomputer as a personal computer was	Data general corporation
A digital computer did not score over an analog computer in terms of	Accuracy
In 1830, charles babbage designed a machine called the analytical engine which he showed at the paris exhibition. In which year was it exhibition?	1855
Which was the world’s first minicomputer and when was it introduced?	Pdp-i, 1958
Where was india’s first computer installed and when?	Indian statistical institute, calcutta, 1955
Which of the following are the two main components of the cpu?	Control unit and alu
Which of the following is true?	Fields are composed of bytes <!–[if !supportLineBreakNewLine]> <!–[endif]> Records are composed of fields Fields are composed of characters
Which of the following file organization is most efficient for a file with a high degree of file activity?	Sequential
The two basic types of record-access methods are	Sequential and random
The advantage of com are its … and …	Compact size, speed
Which of the following is not true for a magnetic disk?	it provides only sequential access to stored data
The primary advantage of key-to-tape data entry system is	The tape is reusable
The terminal device that functions as a cash register, computer terminal, and ocr reader is the:	Pos terminal
Which of the following does not affect the resolution of a video display image?	Screen size
While inserting a diskette into the diskette drive of a pc, the diskette’s label side should face	Up
In which year was uk’s premier computing event called “the which computer” started?	1980
The latest pc keyboards use a circuit that senses the movement by the change in its capacitance,	Capacitance keyboard
Different components on the motherboard of a pc processor unit are linked together by sets or parallel electrical conducting lines. What are these lines called?	Buses
Which of the following magazines covers only the ibm pc and its compatibles?	Pc magazine
The arranging of data in a logical sequence is called	Sorting
When was apple macintosh ii microcomputer introduced in the market?	1983
What is the name of the new color laptop computer which is powered by a 386 processor at 33 mhz and is built by epson?	Ax3/33
What does the disk drive of a computer do?	Read the disk Load a program from the disk into the memory
The language that the computer can understand and execute is called	Machine language
An application suitable for sequential processing is	Processing of grades Payroll processing
The word processing task associated with changing the appearance of a document is	Formatting
Which of the following is used as a primary storage device?	Prom
Which of the following memories needs refreshing?	Dram
Which was the computer conceived by babbage?	Analytical engine
Offline device is	A device which is not connected to cpu
Which of the following registers is loaded with the contents of the memory location pointed by the pc	Instruction register
Which of the following registers is used to keep track of address of the memory location where the next instruction is located?	Program counter
Microprocessors can be used to make	Computers Digital systems Calculators
How many address lines are needed to address each machine location in a 2048 x 4 memory chip?	11
Which american computer company is called big blue?	Ibm
When did ibm introduce the 20286 based pc/at?	1984
When was the x window system born?	1984
Today’s computer giant ibm was earlier known by different name which was changes in 1924. What was that name?	Tabulator machine co.
The first electronic general purpose digital computer built by mauchly and eckert called enia did not work on the stored program principle. How many numbers could it store in its internal memory?	20
The digital computer was developed primarily in	Usa
The subject of cybernetics deals with the science of	Control and communication
Who is credited with the idea of using punch cards to control patterns in a waving machine?	Jacquard
Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computes?	Home computers
Which of the following require large computers memory?	Imaging Graphics Voice
A term associated with the comparison of processing speeds of different computer system is:	Mips
The process of starting a or restarting a computer system by loading instructions from a secondary storage device into the computer memory is called	Booting
Who invented the microprocessor?	Marcian e huff
One computer that is not considered a portable is	Minicomputer
Mnemonic a memory trick is used in which of the following language?	Assembly language

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Disclaimer:- Source can be : Mcqs On Computer By : Dr. Alok Kumar or psexam.com (I am not sure about it; I compiled it and converted in better format for my own study; Just sharing in case anyone finds it useful; don’t want to take credit from the original author)

09.12.12

by Re-Searcher...

FAQs On Computer Fundamentals Part-4

Multi Choice Questions On Computer Fundamentals, Database, Networking, OS, DFS (Compilation)

You can Use Linkedin Credentials to Download.

: Computer Basics – Free Quick Reference Card

Condensing output data to exhibit specific information is	Summarizing
Which chips using special external equipment can reprogram	Prom
A storage device whe3re the access time is depended upon the location of the data is	Serial access
Which number system is commonly used as a shortcut notation for groups of four binary digits?	Hexadecimal
Interface electronic circuit is used to interconnect i/o devices to a computer’s cpu or	Memory
One millisecond is	1000th of a seconds
An online backing storage system capable of storing larger quantities of data is	Mass storage
One of a class of storage device devices that can access storage locations in any order is	Dasd
Which is an item of storage medium in the form of circular plate?	Disk
Properly arranged data is called	Information
Another word for a daisy wheel printer	Golf ball printer
A term used to describe interconnected computer configuration is	Multiprogramming
An input /output device at which data enters or leaves a computer system is	Terminal
A physical connection between the microprocessor memory and other parts of the m9crocomputer is known as	Address bus
A group of magnetic tapes, videos or terminals usually under the control of one master is	Cluster
Number crunch8ier is the informal name for	Super computer
A technique used by codes to convert an analog signal into a digital bit stream is known as	Pulse code modulation
The personnel who deals with the computer and its management put together are called	Humanware
The brain of any computer system is	Cpu
Each model of a computer has a unique	Machine language
Which of the it5ems below are considered removable storage media?	Removable hard disk cartridges (magneto-optical) disk Flexible disks cartridges
Which term is used to describe ram?	Dynamic ram (dram) Static ram (sram) Video ram (vram)
Which of the following are (is) considered to be video component?	Resolution Color depth Refresh rate
On a pc, how much memory is available to application software?	640 kb
Which of the following items are examples of storage devices?	Floppy / hard disks <!–[if !supportLineBreakNewLine]>–> <!–[endif]>–> Cd-roms Tape devices
The width of a processor’s data path is measured in bits. Which of the following are common data paths?	8 bits
Which is the type of memory for information that does not change on your computer?	Rom
What type of memory is not directly addressable by the cpu and requires special softw3are called ems (expanded memory specification)?	Expanded
Before a disk can be used to store data. It must be…….	Formatted
What type of device is computer keyboard?	Input
The original ascii code used…bits of each byte, reserving that last bit for error checking	7
Which company is the biggest player in the microprocessor industry?	Intel
What is required when more than one person uses a central computer at the same time?	Terminal
A hard copy would be prepared on a	Line printer Dot matrix printer Typewriter terminal
A high quality cad system uses the following for printing drawing and graphs	Digital plotter
Symbolic logic was discovered by	George boole
What was the nick name of the computer used by the americans in 1952 for their h-bomb project?	Maniac
The word length of a computer is measured in	Bits
Multi user systems provided cost savings for small business because they use a single processing unit to link several	Dumb terminals
What are the three decisions making operations performed by the alu of a computer?	Grater than Less than Equal to
Which part of the computer is used for calculating and comparing?	Alu
Can you tell what passes into and out from the computer via its ports?	Data
Which type of computers uses the 8-bit code called ebcdic?	Mainframes
Where as a computer mouse moves over the table surface, the trackball is	Stationary
Which one of the following input device is user-programmable?	Intelligent terminal
Which computer memory is used for storing programs and data currently being processed by the cpu?	Internal memory
Computer instructions written with the use of english words instead of binary machine code is called	Symbolic code
Computer operators	Operate the device which input and output data from the computer
A name or number used to identify a storage location is called	An address
Which of the following is a secondary memory device?	Disk
The first electronic computer in the world was	Eniac
The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called	Ascii
Who invented the microprocessor?	Marcian e huff
The accuracy of the floating-point numbers representable In two 16-bit words of a computer is approximately	6 digits
Plotter accuracy is measured in terms of repeatability and	Resolution
Daisy wheel printer is a type of	Impact printer
The number of records contained within a block of data on magnetic tape is defined by the	Blocking factor
Serial access memories are useful in applications where	Data naturally needs to flow in and out in a serial form
Which of the following memories must be refreshed many times per second?	Dynamic ram (dram)
The memory which is programmed at the time it is manufactured	Pom
Which of the following memory medium is not used as main memory system?	Magnetic tape
Registers, which are partially visible to users and used to hold conditional, are known as	General purpose register
One of the main feature that distinguish microprocessors from micro-computers is	Microprocessor does not contain i/o devices
The least significant bit of the binary number, which is equivalent to any odd decimal number, is:	0
What type of control pins is needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?	Bus arbitration
When was the world’s first laptop computer introduced in the market and by whom?	Epson, 1981
The first microprocessor built by the intel corporation was called	4004
Who built the world’s first electronic calculator using telephone relays, light bulbs and batteries/	George stibits
Who developed a mechanical device in the 17th century that could add, subtract, multiple, divide and find square roots?	Leibniz
IBM 7000 digital computer	Has modular constructions
An integrated circuit is	Fabricated on a tiny silicon chip
The first machine to successfully perform a long series of arithmetic and logical operations was:	Mark-i
In the third generation of computers	Online real time systems first become popular
An ibm system/38 represents the computer class of:	Small scale computer
The first firm to mass-market a microcomputer as a personal computer was	Radio shaks
Which of the following is used as a primary storage device?	Prom
The output quality of a printer is measured by	Dots per inch
In analog computer	Input is never converted to digital form
Who designed the first electronics computer – eniac/	J. P. Eckert and j. W. Mauchly
Which8-bit chip was used in many of today’s trs-80 computers?	Z-80
What is the main difference between a mainframe and a super computer?	Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently
What do you call the programs that are used to find out possible faults and their causes?	Diagnostic software
Which of the following is not the classification of computers based on application?	Digital computers
Networking such as lan, man started from	Second generation
LSI, VLSI & ULSI chips were used in which generation?	3rd
What was the computer invented by attanasoff and clifford?	Abc
Which of the following was a special purpose computer?	Abc