Layer 2 of the OSI reference model. This layer provides reliable transit of data across a physical link. The data link layer is concerned with physical addressing, network topology, line discipline, error notification, ordered delivery of frames, and flow control. The IEEE has divided this layer into two sublayers: the MAC sublayer and the LLC sublayer. Sometimes simply called link layer. Roughly corresponds to the data link control layer of the SNA model.
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Firewalls can't protect very well against things like viruses or malicious software (malware). There are too many ways of encoding binary files for transfer over networks, and too many different architectures and viruses to try to search for them all. In other words, a firewall cannot replace security-consciousness on the part of your users. In general, a firewall cannot protect against a data-driven attack--attacks in which something is mailed or copied to an internal host where it is then executed.
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Properly configured firewalls can limit the propagation of worms - a form of malware. Typically, firewalls are edge or parameter devices (separates network zones) and most viruses and malware targets end points (user workstations and servers).
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Tuesday, November 06, 2007
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software,
data,
encoding,
security,
transfer,
computer,
firewall,
viruses,
malware,
binary files,
networks,
security-consciousness,
internal host
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100 means 100 bps (bits per second). This is the data transfer speed for cables.
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Friday, March 28, 2008
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These are networking protocols tcp/ip for internet protocal
udp is the data format
ftp is file transfer protocol
typically used by hackers to connect, get the data and do the file transfer.
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Sunday, August 03, 2008
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it is lapd --link access protocol for d channel, it is the protocol used in gsm for communication between bts and msc
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Thursday, March 13, 2008
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An objective person can compartmentalize their feelings, and has to in order to be objective. They cannot let their feelings get in the way of their thought processes. They rely on data and facts, not emotion when considering things. Depending on what the "question" is, they may consider the emotions of themselves and others as "factors" but do not allow them to control their thinking.
If a person is getting all emotional, if they're making fast defensive statements, they're not being objective. They may be "rational" but that is not the same thing as objective.
One of the Merriam Webster definitions of objective is: "expressing or dealing with facts or conditions as perceived without distortion by personal feelings, prejudices, or interpretations"
My Answer: No. I find that objective people, are usually,very difficult to have a sensible discussion with.
Most things in life are subjective and anybody who isn't aware of this, is probably, very young, or very limited in their perception and experience, of life.
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Friday, July 11, 2008
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LINQ defines standard query operators that allow code written in LINQ-enabled languages to filter, enumerate, and create projections of several types of collections using the same syntax. Such collections may include arrays, enumerable classes, XML, datasets from relational databases, and third party data sources. The LINQ project uses features of version 2.0 of the .NET Framework, new LINQ-related assemblies, and extensions to the C# and Visual Basic .NET languages. Microsoft has distributed a preview release of LINQ, consisting of those libraries and compilers for C# 3.0 and Visual Basic 9. Other languages, such as F# and Nemerle, have also announced preliminary support.
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Friday, October 19, 2007
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