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What is OSPF?

Asked by @ in Computers & Technology at   11:13 AM on November 09, 2007

mrmister's Answer

OSPF (Open Shortest Path First) is a router protocol used within larger autonomous system networks in preference to the Routing Information Protocol (RIP), an older routing protocol that is installed in many of today's corporate networks. Like RIP, OSPF is designated by the Internet Engineering Task Force (IETF) as one of several Interior Gateway Protocols (IGPs).

Answered at 11:23 AM on November 09, 2007

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What is https

Asked by enviornment in Computers & Technology at   5:25 PM on November 06, 2007

mrmister's Answer

https is a URI scheme used to indicate a secure HTTP connection. It is syntactically identical to the http:// scheme normally used for accessing resources using HTTP. Using an https: URL indicates that HTTP is to be used, but with a different default TCP port (443) and an additional encryption/authentication layer between the HTTP and TCP. This system was designed by Netscape Communications Corporation to provide authentication and encrypted communication and is widely used on the World Wide Web for security-sensitive communication such as payment transactions and corporate logons.

Answered at 6:03 PM on November 06, 2007

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What is meant by User Datagram Protocol?

Asked by @ in Computers & Technology at   11:07 PM on November 03, 2007

mrmister's Answer

Abbreviated UDP, a connectionless protocol that, like TCP, runs on top of IP networks. Unlike TCP/IP, UDP/IP provides very few error recovery services, offering instead a direct way to send and receive datagrams over an IP network. It's used primarily for broadcasting messages over a network.

Answered at 11:18 PM on November 03, 2007

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What is topology

Asked by enviornment in Computers & Technology at   5:53 PM on November 05, 2007

mrmister's Answer

The shape of a local-area network (LAN) or other communications system. Topologies are either physical or logical. There are four principal topologies used in LANs. bus topology: All devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks. Ethernet systems use a bus topology. ring topology : All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it. Ring topologies are relatively expensive and difficult to install, but they offer high bandwidth and can span large distances.

Answered at 6:45 PM on November 05, 2007

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What is meant by Lossy?

Asked by @ in Computers & Technology at   11:01 PM on November 03, 2007

mrmister's Answer

A lossy compression method is one where compressing data and then decompressing it retrieves data that may well be different from the original, but is close enough to be useful in some way. Lossy compression is most commonly used to compress multimedia data (audio, video, still images), especially in applications such as streaming media and internet telephony. On the other hand lossless compression is preferred for text and data files, such as bank records, text articles, etc.

Answered at 11:16 PM on November 03, 2007

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What is meant by Disc Array?

Asked by @ in Computers & Technology at   10:59 PM on November 03, 2007

mrmister's Answer

Disk array refers to a linked group of one or more physical independent hard disk drives generally used to replace larger, single disk drive systems. The most common disk arrays are in daisy chain configuration or implement RAID (Redundant Array of Independent Disks) technology. A disk array may contain several disk drive trays, and is structured to improve speed and increase protection against loss of data.

Answered at 11:14 PM on November 03, 2007

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Explain ASCII Code

Asked by nisha in Computers & Technology at   10:22 PM on October 25, 2007

mrmister's Answer

ASCII is a type of coding used by computers, changing letters into numbers because a computer can only send numerical values [ASCII= American Standard Code for Information Interchange]. Hand out the ASCII charts and have each group create a short message (no more than 20 characters, including spaces) to be sent to another "computer" and put it into ASCII.

Answered at 10:24 PM on October 25, 2007

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what are side effects of excessive drinking of alcohol?

Asked by Vamsi in Personal Health at   12:01 AM on October 30, 2007

mrmister's Answer

The primary effect of alcoholism is to encourage the sufferer to drink at times and in amounts that are damaging. The secondary damage caused by an inability to control one's drinking manifests in many ways. It is common for a person suffering from alcoholism to drink well after physical health effects start to manifest. The physical health effects associated with alcohol consumption are described in Alcohol consumption and health, but may include cirrhosis of the liver, pancreatitis, epilepsy, polyneuropathy, alcoholic dementia, heart disease, increased chance of cancer, nutritional deficiencies, sexual dysfunction, and death from many sources. Social effects The social problems arising from alcoholism can be significant. Being drunk or hung over during work hours can result in loss of employment, which can lead to financial problems including the loss of living quarters. Drinking at inappropriate times, and behavior caused by reduced judgment, can lead to legal consequences, such as criminal charges for drunk driving or public disorder, or civil penalties for tortious behavior. An alcoholic's behavior and mental impairment while drunk can profoundly impact surrounding family and friends, possibly leading to marital conflict and divorce, or contributing to domestic violence. This can contribute to lasting damage to the emotional development of the alcoholic's children, even after they reach adulthood. The alcoholic could suffer from loss of respect from others who may see the problem as self-inflicted and easily avoided. Alcohol withdrawal Alcohol withdrawal differs significantly from most other drugs because it can be directly fatal. While it is possible for heroin addicts, for instance, to die from other health problems made worse by the strain of withdrawal, an otherwise healthy alcoholic can die from the direct effects of withdrawal if it is not properly managed. Heavy consumption of alcohol reduces the production of GABA, which is a neuroinhibitor. An abrupt stop of alcohol consumption can induce a condition where neither alcohol nor GABA exists in the system in adequate quantities, causing uncontrolled firing of the synapses. This manifests as hallucinations, shakes, convulsions, seizures, and possible heart failure, all of which are collectively referred to as delirium tremens. All of these withdrawal issues can be safely controlled with a medically supervised detox.

Answered at 12:16 AM on October 30, 2007

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What are kibibytes, mebibytes, and gibibytes?

Asked by Roopesh in Computers & Technology at   7:39 PM on October 23, 2007

mrmister's Answer

The size of computer data is measured in bytes. Larger units of bytes are often measured in kilobytes, megabytes, and gigabytes. However, the size of these units can be somewhat ambiguous. For example, a kilobyte can equal 1,024 bytes or 1,000 bytes, depending on the context in which it is used. A megabyte may equal 1,048,576 bytes or 1,000,000 bytes.

Answered at 8:02 PM on October 23, 2007

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WHAT इस OPERATOR OVERLOADING?

Asked by rakesh in Computers & Technology at   2:07 PM on October 27, 2007

mrmister's Answer

In computer programming, operator overloading (less commonly known as operator ad-hoc polymorphism) is a specific case of polymorphism in which some or all of operators like +, =, or == have different implementations depending on the types of their arguments. Sometimes the overloadings are defined by the language, sometimes the programmer can implement support for new types. Operator overloading is useful because it allows the developer to program using notation closer to the target domain and allows user types to look like types built into the language. It can easily be emulated using function calls; for an example, consider for integers a, b, c:

Answered at 2:09 PM on October 27, 2007

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