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Explain in detail about Operating Systems (OS)
Operating system (OS) is a program which after being initially loaded into computer by a boot program, manages all the other applications/programs. On a PC, first program which runs is stored on a ROM chip. This program checks system hardware to make sure everything is functioning routinely. This checks CPU, memory and basic I/O systems (bios) for errors. If all is satisfactory, BIOS will activate disk drives. When hard drive is activated, OS is found in boot and is then loaded.
State in brief about the proxy server A proxy server also helps a lot since it hides the real IP addresses of users requesting resources outside the firewall. Finally, the
SMTP Simple Mail Transfer Protocol, a protocol for sending e-mail messages among servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from si
Explain about the network security. Network security implies the protection of networks and their services through unauthorized access, destruction or disclosure, modificati
How to enter from command mode to insertion mode using Vi Editor? Ans) There are various commands that put the VI editor into insert mode. The most usually used commands to get
Q. Instruction of a micro-program? A micro-instruction is an instruction of a micro-program. It specifies one or more than one micro-operations that can be executed concurrentl
What is branch folding? The instruction fetch unit has implemented the branch instruction concurrently with the implementation of other instructions. This technique is referred
What is Repository Info. Systems? It is a tool with which you can create data stored in the ABAP/4 Dictionary available
Q. Explain arithmetic shift Micro-operations? In arithmetic shift a signed binary number is shifted to right or to the left. So an arithmetic shift-left causes a number to be m
Explain the use of SSL to secure the network. SSL (Secure Sockets Layer) is a protocol developed by Netscape for transferring private documents by the Internet. SSL works by u
Write an AWK program which takes the following input file and processes it. $cat data.txt John Do 111-1111 English 90 Maths 80 Alice Do 222-2222 English 90 Maths 90 Chemistry 93
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