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Questions and Answers
[Blank] communications refers to the transmission of digital data between two or more computers across a network.
[Blank] communications refers to the transmission of digital data between two or more computers across a network.
Data
A system of interconnected computers and computerized peripherals such as printers is called a ______ network.
A system of interconnected computers and computerized peripherals such as printers is called a ______ network.
computer
[Blank] engineering is complex, involving software, firmware and hardware. To ease network engineering, the whole networking concept is divided into multiple layers.
[Blank] engineering is complex, involving software, firmware and hardware. To ease network engineering, the whole networking concept is divided into multiple layers.
Networking
A network of networks is called an ______, or simply the internet.
A network of networks is called an ______, or simply the internet.
The Internet uses a very high-speed backbone of fiber ______.
The Internet uses a very high-speed backbone of fiber ______.
One key application of communication and computer networks is ______ sharing, allowing multiple users to access the same resources such as printers and storage devices.
One key application of communication and computer networks is ______ sharing, allowing multiple users to access the same resources such as printers and storage devices.
Computer networks can be classified based on various factors, including geographical span, inter-connectivity, ______, and architecture.
Computer networks can be classified based on various factors, including geographical span, inter-connectivity, ______, and architecture.
In terms of inter-connectivity, a network where every single device is connected to every other device is known as a ______ mesh.
In terms of inter-connectivity, a network where every single device is connected to every other device is known as a ______ mesh.
From an administrator's perspective, a ______ network belongs to a single autonomous system and cannot be accessed outside its physical or logical domain.
From an administrator's perspective, a ______ network belongs to a single autonomous system and cannot be accessed outside its physical or logical domain.
In network architecture, systems can be connected Point-to-Point, or in back-to-back fashion as ______.
In network architecture, systems can be connected Point-to-Point, or in back-to-back fashion as ______.
A ______ Area Network is a small network that's very personal to a user, and may include devices such as Bluetooth headphones and Wireless printers.
A ______ Area Network is a small network that's very personal to a user, and may include devices such as Bluetooth headphones and Wireless printers.
A Bluetooth-enabled Personal Area Network which may contain up to 8 devices connected together in a master-slave fashion is a ______.
A Bluetooth-enabled Personal Area Network which may contain up to 8 devices connected together in a master-slave fashion is a ______.
A computer Network spanned inside a building and operated under single administrative system is a ______ Area Network (LAN).
A computer Network spanned inside a building and operated under single administrative system is a ______ Area Network (LAN).
[Blank] are composed of inexpensive networking and routing equipment.
[Blank] are composed of inexpensive networking and routing equipment.
The backbone of a ______ Area Network is high-capacity and high speed fiber optics, working between LANs and WANs, and provides uplink for LANs to the internet.
The backbone of a ______ Area Network is high-capacity and high speed fiber optics, working between LANs and WANs, and provides uplink for LANs to the internet.
A ______ Area Network covers a wide area which may span across provinces and even a whole country.
A ______ Area Network covers a wide area which may span across provinces and even a whole country.
Data ______ (DC) is the process of using computing and communication technologies to transfer data from one place to another, or between participating parties.
Data ______ (DC) is the process of using computing and communication technologies to transfer data from one place to another, or between participating parties.
DC enables the movement of electronic or digital data between two or more ______ nodes, regardless of geographical location, technological medium or data contents.
DC enables the movement of electronic or digital data between two or more ______ nodes, regardless of geographical location, technological medium or data contents.
Data communications refers to the ______ of this digital data between two or more computers and a computer network.
Data communications refers to the ______ of this digital data between two or more computers and a computer network.
Data ______ is the process of using computing and communication technologies to transfer data from one destination to another.
Data ______ is the process of using computing and communication technologies to transfer data from one destination to another.
[Blank] enables the movement of electronic or digital data between network nodes, regardless of geographical location or technological medium.
[Blank] enables the movement of electronic or digital data between network nodes, regardless of geographical location or technological medium.
Data communications refers to the transmission of digital data between computers, with the best-known computer network being the ______.
Data communications refers to the transmission of digital data between computers, with the best-known computer network being the ______.
A network consists of interconnected computers and peripherals like printers, which facilitates information sharing among devices using wired or ______ media.
A network consists of interconnected computers and peripherals like printers, which facilitates information sharing among devices using wired or ______ media.
Network engineering involves dividing the networking concept into multiple ______, with each layer responsible for specific tasks.
Network engineering involves dividing the networking concept into multiple ______, with each layer responsible for specific tasks.
The Internet, a network of networks, connects WANs and LANs, using the ______ protocol suite and IP addresses for communication.
The Internet, a network of networks, connects WANs and LANs, using the ______ protocol suite and IP addresses for communication.
Internet services like WWW and FTP rely on a ______-Server model to share and access information worldwide.
Internet services like WWW and FTP rely on a ______-Server model to share and access information worldwide.
Applications of computer networks include resource sharing, information exchange via emails and FTP, interaction with users through dynamic web pages, and ______ conferencing.
Applications of computer networks include resource sharing, information exchange via emails and FTP, interaction with users through dynamic web pages, and ______ conferencing.
Network classification considers geographical span, inter-connectivity, administration, and ______.
Network classification considers geographical span, inter-connectivity, administration, and ______.
Networks can be private, requiring a single autonomous system for access, or ______, accessible to all.
Networks can be private, requiring a single autonomous system for access, or ______, accessible to all.
Network applications encompass resource sharing, exchanging information via emails, and engaging in ______ messaging.
Network applications encompass resource sharing, exchanging information via emails, and engaging in ______ messaging.
Distinguished by geographic span, networks range from as small as a mobile phone's communication with a Bluetooth headphone to as vast as the ______.
Distinguished by geographic span, networks range from as small as a mobile phone's communication with a Bluetooth headphone to as vast as the ______.
A Personal Area Network (PAN) involves devices such as wireless computer keyboards, Bluetooth headphones, and ______ printers within a 10 meter range.
A Personal Area Network (PAN) involves devices such as wireless computer keyboards, Bluetooth headphones, and ______ printers within a 10 meter range.
Local Area Networks (LANs) are used inside buildings, colleges, or universities to share files, resources, scan documents, or connect to the ______.
Local Area Networks (LANs) are used inside buildings, colleges, or universities to share files, resources, scan documents, or connect to the ______.
LANs use inexpensive networking equipment and Ethernet technology, operating under a local domain that is controlled ______.
LANs use inexpensive networking equipment and Ethernet technology, operating under a local domain that is controlled ______.
Flashcards
Data Communications (DC)
Data Communications (DC)
The process of using computing and communication technologies to transfer data between devices or parties.
DC Enables
DC Enables
The movement of electronic or digital data between two or more network nodes, regardless of location or medium.
Computer Network
Computer Network
A system of interconnected computers and peripherals that allows for information sharing.
Networking Engineering
Networking Engineering
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Internet / Internetwork
Internet / Internetwork
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Computer Network Classification
Computer Network Classification
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Personal Area Network (PAN)
Personal Area Network (PAN)
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Piconet
Piconet
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Local Area Network (LAN)
Local Area Network (LAN)
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Metro Area Network (MAN)
Metro Area Network (MAN)
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Wide Area Network (WAN)
Wide Area Network (WAN)
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Internet
Internet
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Study Notes
Data Communications (DC) Definition
- DC uses computing and communication technologies to transfer data.
- DC enables the movement of electronic or digital data.
- Data moves between two or more network nodes.
- This movement occurs regardless of geographical location, technological medium, or data contents.
- Data communications refers to the transmission of digital data.
- Transmission occurs between two or more computers and a computer network.
- A data network is a telecommunications network.
- It allows computers to exchange data through physical connections via cable or wireless media.
- The Internet is the best-known computer network.
Network Basic Understanding
- A computer network is a system of interconnected computers and computerized peripherals like printers.
- Computer networks facilitate information sharing.
- Computers connect to each other through wired or wireless media.
Network Engineering
- Networking engineering is a complex field involving software, firmware, chip-level engineering, hardware, and electric pulses.
- To simplify network engineering, the networking concept is divided into multiple layers.
- Each layer performs a specific task independently.
- Networking tasks rely on all layers, which share data, depend on each other for input, and send output.
Internet
- The internet, or internetwork, connects networks and is the largest network.
- It connects WANs and can connect to LANs and home networks.
- The internet uses the TCP/IP protocol suite with IP as its addressing protocol.
- The internet is widely implemented using IPv4 but is gradually migrating to IPv6 due to address space limitations.
- The internet allows users to share/access worldwide information.
- It uses WWW, FTP, email, audio, and video streaming, operating on a Client-Server model at a large scale.
- The internet uses a high-speed fiber optic backbone.
- Submarine communication cables are fibers laid under the sea to interconnect continents.
- Internet uses HTML linked pages accessed by Web Browsers.
- Web servers respond with HTML pages when a user requests a page using a web browser.
- Communication delay is very low.
- The Internet provides various services, including websites, email, instant messaging, blogging, social media, marketing, networking, resource sharing, and audio/video streaming.
Applications of Communication & Computer Networks
- Computer systems and peripherals are networked to enable resource sharing.
- Resource sharing includes printers and storage devices.
- Information is exchanged through email and FTP.
- Information is shared via the Web or Internet.
- Interaction with users made easy via dynamic web pages
- IP phones and video conferences are enabled.
- Networks support parallel computing and instant messaging.
Classification of Computer Networks
- Computer networks are classified based on geographical span, inter-connectivity, administration, and architecture.
Geographical Span
- Networks may span a table with Bluetooth devices over a few meters.
- Networks may span a building with intermediate devices.
- Networks may span a city, multiple cities/provinces or the entire world.
Inter-Connectivity
- Network components connect logically, physically, or both ways.
- A network mesh connects every device to every other device.
- A bus-like structure connects all devices to a single medium but disconnects them geographically.
- A linear structure connects each device to its left and right peers.
- A star-like structure connects all devices to a single central device.
- A hybrid structure connects devices arbitrarily using various connection methods.
Administration
- A private network belongs to a single autonomous system, inaccessible outside its physical or logical domain.
- A public network is accessible by all.
Network Architecture
- Computer networks are discriminated into client-server, peer-to-peer, or hybrid types.
- The type depends upon the architecture.
- Servers serve client requests by processing them.
- Point-to-Point connections, or back-to-back connections have systems at the same level.
- These are called peers.
- Hybrid networks involve a combination of network architectures.
Network Applications
- They provide resource sharing such as printers and storage devices.
- They provide exchange of information by means of e-Mails and FTP.
- Web or Internet enables information sharing.
- Dynamic web pages enable interaction with other users.
- They support IP phones ans video conferences.
- They enable parallel computing and instant messaging.
Types of Network
- Networks are distinguished based on geographical span.
- A network can be as small as the distance between a mobile phone and a Bluetooth headphone.
- It can be as large as the Internet.
Personal Area Network (PAN)
- A PAN is a small, personal network.
- It may include Bluetooth or infrared devices with a connectivity range up to 10 meters.
- PAN devices may consists of computer keyboard, a mouse, Bluetooth headphones, wireless printers, and TV remotes.
- Piconet is an example of Bluetooth-enabled Personal Area Networks.
- It contains up to eight devices connected in a master-slave setup.
Local Area Network (LAN)
- A LAN spans a building and is operated under a single administrative system.
- LANs cover offices, schools, colleges, or universities.
- The number of systems in a LAN ranges from two to 16 million.
- LANs facilitate resource sharing like printers, file servers, scanners, and Internet access.
- LANs use inexpensive equipment.
- They contains local servers for file storage and applications.
- LANs operate on private IP addresses without heavy routing.
- LANs work under local domain centrally.
- LANs use Ethernet or Token-ring technology.
- Ethernet with Star topology is more common
- Token-ring is rarely used.
- A LAN can be wired, wireless, or both.
Metro Area Network (MAN)
- MAN's backbone is high-capacity and high-speed fiber optics.
- MAN operates between LANs and WANs.
- MAN provide uplink for LANs to WANs or internet.
Wide Area Network (WAN)
- A WAN covers a wide area potentially spanning provinces or a country.
- Telecommunication networks are WANs.
- They provide connectivity to MANs and LANs.
- WANs use expensive equipment due to a very high-speed backbone.
- WANs use advanced technologies such as ATM, Frame Relay, and SONET.
- WANs may be managed by multiple administrations.
Internetwork
- Also called the internet, it is the largest network, connecting WANs, LANs, and home networks.
- It uses TCP/IP suite with IP addressing.
- IPv4 is widely implemented on the Internet; IPv6 is gradually taking over due to IPv4 shortage.
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