QUESTION: 45

Which of the following statements are true about the GNU GPL? Each correct answer represents a complete solution. Choose all that apply.

GNU GPL grants the recipients of a computer program the rights of free software definition.
GNU GPL is the most widely used free software license.
GPL stands for Generate and Promote Licenses.
GNU GPL is the first and foremost copyleft license.

Answer(s): A,B,D

Explanation:

GNU General Public License (GNU GPL, or simply GPL) is the most widely used free software license, originally written by Richard Stallman for the GNU project.GPL is the first and foremost copyleft license, which means that derived works can only be distributed under the same license terms. Under this philosophy, the GPL grants the recipients of a computer program the rights of the free software definition and uses copyleft to ensure the freedoms are preserved, even when the work is changed or added to. This is in distinction to permissive free software licenses, of which the BSD licenses are the standard examples.
Answer option C is incorrect. GPL stands for General Public License.

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QUESTION: 46

Which of the following domain codes is used by the educational institutions?

.gov
.mil
.edu
.org E. .com

Answer(s): C

Explanation:

The .edu domain code is used by the educational institutions.
Answer option E is incorrect. The .com domain code is the short form for commercial. The websites with .com domain are meant for commercial purposes. This domain code can be considered the most commonly used, as most websites use this domain code.
Answer option A is incorrect. The .gov domain code is used by all aspects of the United States Government except the Military.
Answer option B is incorrect. The .mil domain code is used by the United States Military.
Answer option D is incorrect. The .org domain code is used by the non-profit organizations and other such non-commercial groups. Now any group, individual, or company can register this domain.

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QUESTION: 47

The word netiquette is a combination of the words network and etiquette. It covers the guidelines and best practices that should be followed in an electronic communication. According to the netiquette, which of the following are the guidelines that should be followed in electronic communication? Each correct answer represents a complete solution. Choose all that apply.

Message length
Identity
Trademark
E-mail graphics E. Security F:Ownership G: Copyright

Answer(s): A,B,D

Explanation:

The word netiquette is a combination of the words network and etiquette. It covers the guidelines and best practices that should be followed in an electronic communication. The several versions of netiquette are available on the web, which pertain to e-mail and instant messaging. In general, following are the guidelines that should be followed in electronic communication:
Notes Articles Items Reports Help Ownership: Ownership is the state or fact of exclusive rights and control over property, which may be an object, land/real estate or intellectual property. Ownership involves multiple rights, collectively referred to as title, which may be separated and held by different parties. It is necessary to know who is the owner of the sent and received e-mails.

Security:
A user should always assume that messages sent across the Internet are not secure. He should never write anything into a message that he would not write on a postcard.
Copyright:
A user should always know and understand copyright rules and laws. It may be possible that the thing permissible in one location may not be okay in the recipient's location.
Chain letters:
Chain letters are highly discouraged on the Internet. The senders of chain letters can have network access revoked by a local administrator or and Internet Service Provider (ISP). If a user receives a chain letter, he should inform to the network administrator or ISP.

Flames:
Flames refer to the angry messages.
A user should never respond to angry messages and also never respond in anger.Addressees: A user should always confirm before responding to a message that he is the primary addressee. If he is a Cc addressee then it means that he was sent an information copy. Before sending a new message, be sure that the e-mail addresses mentioned are correct.

Identity:
A user should always identify himself in messages. This will help the recipients to know who sent the message and from where. Users should always include a subject line in an e-mail.
A user should always use small signature blocks.
Message length: A user should always write short messages. The word 'long' should be included in its subject line if a message is longer than 100 lines. Do not send messages with very large and uncompressed attachments.
Timely responses: A user should always respond to all appropriate messages timely. It may be possible that sender is often waiting for the response.
Spelling and grammar: A user should always use spelling and grammar checker to scan the message body before sending message. This will help in removing grammatical and spelling errors from the message.
E-mail attachments: Some e-mail service providers do not allow large attachments.
A user should avoid sending an attachment larger than 1 MB when possible. He should use WinZip or WinRAR to reduce the size of the file if necessary.
E-mail privacy: A user should not share the e-mail addresses of other people on an e-mail message or on a public site, poster, etc.
E- mail graphics: Some of the e-mail clients are not able to or not configured to display embedded graphics, sound files, or animations in a message.
A user should check with recipients to verify whether graphics will display or not on their e-mail clients. Text-only e-mail clients are not able to display graphics at all.

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QUESTION: 48

Which of the following network types is defined as a network of networks?

Answer(s): C

Explanation:

A wide area network (WAN) is a geographically dispersed telecommunications network. The term distinguishes a broader telecommunication structure from a local area network (LAN).
A wide area network may be privately owned or rented, but the term usually connotes the inclusion of public (shared user) networks. An intermediate form of network in terms of geography is a metropolitan area network (MAN).
A wide area network is also defined as a network of networks, as it interconnects LANs over a wide geographical area.
Answer option B is incorrect.
A campus area network (CAN) is a computer network that interconnects local area networks throughout a limited geographical area, such as a university campus, a corporate campus, or a military base. It could be considered a metropolitan area network that is specific to a campus setting.
A campus area network is, therefore, larger than a local area network but smaller than a wide area network. The term is sometimes used to refer to university campuses, while the term corporate area network is used to refer to corporate campuses instead. Although not considered a wide area network, a CAN extends the reach of each local area network within the campus area of an organization. In a CAN, the buildings of a university or corporate campus are interconnected using the same types of hardware and networking technologies that one would use in a LAN. In addition, all of the components, including switches, routers, and cabling, as well as wireless connection points, are owned and maintained by the organization.
Answer option A is incorrect.
A Metropolitan Area Network (MAN) is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large Local Area Network (LAN) but smaller than the area covered by a Wide Area Network (WAN). The term is applied to the interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network). It is also used to mean the interconnection of several local area networks by bridging them with backbone lines. The latter usage is also sometimes referred to as a campus network.
A MAN usually interconnects a number of local area networks (LANs) using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks and the Internet. Examples of metropolitan area networks of various sizes can be found in the metropolitan areas of London, England; Lodz, Poland; and Geneva, Switzerland. Large universities also sometimes use the term to describe their networks.
A recent trend is the installation of wireless MANs.
Answer option D is incorrect. Local Area Network (LAN) represents a network that covers a very close geographic area, such as a floor of a building, a building itself, or a campus environment. LAN is a high-speed network that connects computers, printers, and other network devices together. The media types used in LANs include Ethernet, Fast Ethernet (FE), Gigabit Ethernet (GE), Token Ring, and FDDI.
A LAN may include servers, workstations, hubs, bridges, switches, routers, gateways, firewalls, etc.

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