*_NECO COMPUTER STUDIES By
*_(2ai)_*
E mail service is a means of sending message,text and computer files between computers via the internet. Email is the exchange of computer stores messages by telecommunications. Email service provider (ESP) allows users to send email campaigns to a list of subscribers.
(2aii)
(Pick Any Three)
(i) managing email is easy
(ii) Email is fast
(iii) Email is inexpensive
(iv) Email is easy to filter
(v) Email Transmission is secure and Reliable
(2bi)
Broadcasting is the distribution of audio and video content to a dispersed audience via any audio or visual mass communications medium, but usually one using electromagnetic radiation (radio waves). The receiving parties may include the general public or a relatively large subset thereof. Broadcasting has been used for purposes of private recreation, non commercial exchange of messages,experimentation ,self training and emergency communication.
(2bii)
(Pick Any Three)
(i) Personal Area Network (PAN)
(ii) Metropolitan Area Network (MAN)
(iii) Local Area Network (LAN)
(iv) Wide Area Network (WAN)
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*NECO COMPUTER STUDIES*
(3i)
Bandwidth: Bandwidth is the capacity of data that can be transferred between the website, its users and the servers. It is the capacity of the connection between the website user and the server. Bandwidths are either expressed in MB/s (Megabytes per Second) or GB/s (Gigabytes per Second).
(3ii)
Bookmark : Bookmark is a Web browser feature used to save a Uniform Resource Locator(URL) address for future reference. Bookmarks save user and browser time, which is especially useful for Web pages with long Uniform Resource Locator(URLs).Browsers usually provide folder options for related bookmarks
(3iii)
Download: Download means to receive data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar system. Download can refer to the general transfer of a file from one computer to another over a network,usually from a larger server to a user device.
(3iv)
HTML: HTML stands for HyperText Markup Language. It is a standard markup language for web page creation. It allows the creation and structure of sections, paragraphs, and links using HTML elements (the building blocks of a web page) such as tags and attributes.
(3v)
Hyperlink: Hyperlink is an element in an HTML document that links to either another portion of the document or to another document altogether. On webpages, hyperlinks are usually colored purple or blue and are sometimes underlined.
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*_By Official Crackerjack_*
*_07068821078_*
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*NECO COMPUTER STUDIES*
(4ai)
Hotspots are hyperlinks within your Microsoft PowerPoint presentations. Rather than adding text or buttons, you can make an image a link directly for a more stylish and professional looking presentation. Hotspots prompt the user to click on them to display more information about the object/image being viewed
(4aii)
(Pick Any Four)
(i) Flexibility
(ii)User Friendly
(iii)Portability
(iv)Reliability
(v)Self-Documenting Code
(4b)
ADVANTAGES OF RADIO BROADCASTING:
(Pick Any Three)
(i)Radio broadcasting can be enjoyed at home, at work, and while driving.
(ii) Permits you to create a personality for your business using only sounds and voices.
(iii) Radio provides a huge selection of channels based on geographical location
(iv)Compared to TV, radio is a cost-efficient
DISADVANTAGES OF RADIO BROADCASTING:
(Pick Any Three)
(i) Listeners cannot refer back to your adverts to go over important points.
(ii)Only audio media and no visuals are available
(iii)It has limited research data and frequency bandwidth
(iv)Sometimes it is difficult to get the proper signals from a radio station.
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*07068821078*
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*NECO COMPUTER STUDIES*
(5ai)
Light Pen: light pen is a light-sensitive pen-like device used by pointing it at the display surface. A user brings the light pen to the desired point on the screen and presses a button, causing it to identify the current location. It is used to select options from a menu or to draw images.
(5aii)
Barcode reader: Bar code is a specialized code represented by sets of parallel bars of varying thickness and separation. This is used for fast identification of items with an optimal scanner. The optical scanner is called a bar code reader. The bar code reader is a photoelectric scanner that read the bar code.
(5aiii)
Plotter: Plotters are large scale printers that are connected to a computer. They are typically used to print CAD (Computer Aided Drafting) drawings created by engineers and for banner advertisements and other large promotional materials. They are used mainly by industry and businesses who need a flexible, efficient and cost effective printing solution.
(5aiv)
Speaker: Speakers are attached to computers for the output of sound. Sound cards are required in the computer for speakers to function. Speakers range from simple, two-speaker output devices to surround-sound multi channel units.
(5bi)
(Pick Any Two)
(i) Drum plotter
(ii) Flat-bed plotter
(iii) Inkjet plotter
(5bii)
Graphic packages are those programs that allow artiste and computer users to use computers to create, edit, display and print graphic images. A graphics package is an application that can be used to create and manipulate images on a computer. Examples include Paint, Adobe Photoshop, Corel draw, CAD (computer aided design).
(5biii)
(Pick Any Two)
(i) Painting packages
(ii) Drawing packages
(iii)photo editing
(iv) Computer Aided Design(CAD).
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*_By Official Crackerjack_*
*_m_*
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*_NECO COMPUTER STUDIES_*
(6ai)
System software is a type of computer program that is designed to run a computer’s hardware and application programs.
(6aii)
(i) System software runs when the system is turned on and stop when the system is turned off. WHILE Application Program runs as per the user’s request.
(ii) Example of System software is operating system WHILE That of Application software are Photoshop, VLC player etc.
(iii) System software is meant to administer the system resources. WHILE application Program is meant to enable the user to carry out some specific set of tasks or functions.
(6bi)
*_{CHOOSE ANY TWO}_*
(i) The CPU is responsible for all data processing operations.
(ii) It saves information such as data, intermediate results, and instructions (program).
(iii) It directs the operation of all computer components.
(iv) Controlling all other parts of the machine and sending timing signals.
(v) Transferring data between memory and I/O devices.
(vi) Fetching data and instructions from memory.
(vii) Performing arithmetical and logical operations.
(viii) Executing programs stored in memory.
(6bii)
{CHOOSE ANY TWO}
(i) control unit (CU)
(ii) arithmetic logic unit (ALU)
(iii) registers.
(iv) cache.
(v) buses.
(6biii)
{CHOOSE ANY FOUR}
(i) HDMI cable
(ii) VGA cable
(iii) DVI cable
(iv) Ethernet Cable
(v) PS/2 Cable
(vi) 5mm Audio Cable
-EXPLANATION-
*_{CHOOSE ANY TWO_* AND EXPLAIN}
*_(i)_* HDMI cable: HDMI (High definition Media Interface) is a type of computer cable used to transmit high definition video and audio signals. Using the HDMI cables, the audio and video signal can be easily transmitted without compromising the quality of images and can send crystal clear images using this cable.
*_(ii)_* VGA cable: VGA (Video Graphics Ray) cable is another type of computer cable which is used for sending video signals and is used to link the monitor and the CPU of a computer. The VGA cable can also be used in HD televisions. All the information displayed on the monitor is coming from the VGA cable. There is a total of 15 pins in the plugin the cable, which have three rows containing 5 pins each.
