Computer Networks Overview Quiz

To enable computers to communicate and share resources, data, and applications.

Printers, tape backup systems, and storage devices are a few examples.

The client-server model involves clients requesting services from servers. It is a fundamental architecture for many network applications.

<p>VoIP (Voice over IP) is a technology that allows telephone calls to be carried over a computer network, often using Internet technology.</p> Signup and view all the answers

<p>Desktop sharing allows remote workers to view and interact with a graphical computer screen, facilitating collaboration and support.</p> Signup and view all the answers

<p>E-commerce is conducting business electronically, especially with customers and suppliers. Its rapid growth has significantly increased the importance of networks for business transactions and communication.</p> Signup and view all the answers

<p>A LAN (Local Area Network) connects devices within a limited area, a MAN (Metropolitan Area Network) connects devices across a city, and a WAN (Wide Area Network) connects devices across large geographical areas.</p> Signup and view all the answers

<p>Employees can access shared printers, file servers, and databases through the network, allowing for more efficient use of resources.</p> Signup and view all the answers

<p>Resource sharing reduces the need for duplicate hardware and software. Centralized resources accessible to multiple users eliminates individual purchases.</p> Signup and view all the answers

<p>If a server hosting critical files fails, replicated copies on other machines ensure uninterrupted access and prevent data loss.</p> Signup and view all the answers

<p>The client-server model uses lower cost personal computers for users with one or more shared file server machines, which is more cost effective than providing each user with expensive mainframes.</p> Signup and view all the answers

<p>Scalability allows performance to increase by simply adding more processors which avoids extensive and expensive upgrades.</p> Signup and view all the answers

<p>Shared software licenses can reduce costs. Centralized databases allow multiple users to access and update information efficiently.</p> Signup and view all the answers

<p>GPS enables location-based services for targeted ads and delivery tracking, while NFC facilitates contactless payments.</p> Signup and view all the answers

<p>Peer-to-peer involves direct file sharing between devices. Person-to-person involves communication with devices such as email or voice calls.</p> Signup and view all the answers

<p>Privacy concerns due to the widespread collection and use of personal data online. Social media bullying and misinformation.</p> Signup and view all the answers

<p>DNS translates human-readable domain names into IP addresses, allowing users to access resources without remembering numerical IP addresses.</p> Signup and view all the answers

<p>TCP is reliable and connection-oriented, suitable for applications needing guaranteed delivery (e.g., file transfer). UDP is unreliable and connectionless, efficient for applications where speed is crucial (e.g., streaming).</p> Signup and view all the answers

<p>Independence, scalability, client/server architecture, support for various routing protocols, and the ability to connect different computers are key advantages.</p> Signup and view all the answers

<p>Online gaming benefits more from UDP because the speed of data transmission is more crucial than guaranteed delivery; occasional packet loss is less critical than minimizing latency.</p> Signup and view all the answers

<p>FTP facilitates the transfer of files between computers over a network, providing a reliable and efficient method for sharing data.</p> Signup and view all the answers

<p>SMTP is a protocol used to transport electronic mail between senders and receivers, enabling the routing of email across the internet.</p> Signup and view all the answers

<p>Lack of guaranteed packet delivery at the transport layer, limited applicability to other applications, difficulty in replacing protocols, and a lack of clear separation between services, interfaces, and protocols.</p> Signup and view all the answers

<p>ARPANET was created by the Department of Defense during the Cold War to establish a command and control network capable of surviving a nuclear war.</p> Signup and view all the answers

<p>All workstations might be affected because they share the same cable for transmitting information.</p> Signup and view all the answers

<p>Because a single fault in the cable can stop all transmission, making it hard to isolate the source of the problem.</p> Signup and view all the answers

<p>Network performance deteriorates.</p> Signup and view all the answers

<p>A central hub makes all routing decisions, but the significant amount of cable is required to wire each terminal back to the central hub.</p> Signup and view all the answers

<p>The central hub makes all routing decisions.</p> Signup and view all the answers

<p>Star topology requires significantly more cabling because each terminal is wired back to the central hub, even if terminals are close to each other.</p> Signup and view all the answers

<p>Nodes communicate by passing data through the central hub, meaning all data must pass through this central point.</p> Signup and view all the answers

<p>Ethernet.</p> Signup and view all the answers

<p>The agreement on using the TCP/IP protocol as a standard for interconnections. This solved the problem of a cacophony of standards and protocols.</p> Signup and view all the answers

<p>ISOC promotes Internet use, provides statistics, and aids developing countries, while IAB plans long-term trends and maintains the RFC documents of technical solutions and protocols.</p> Signup and view all the answers

<p>It exponentially increased the number of networks, machines, and users as regional networks joined and connections spread across countries.</p> Signup and view all the answers

<p>The success of NSFNET made ARPANET redundant. Many of the sites connected to ARPANET were absorbed by the NSFNET.</p> Signup and view all the answers

<p>Easy-to-use software such as graphical browsers, and improved telecommunications connections.</p> Signup and view all the answers

<p>ARPANET was split in 1983 into ARPANET for research and development, and MILNET for unclassified military sites.</p> Signup and view all the answers

<p>When different networks agreed to use the TCP/IP protocol as a standard for their interconnections. This made it a network of networks.</p> Signup and view all the answers

<p>ISOC spread the use of the Internet, IAB planned long term trends.</p> Signup and view all the answers

A group of computers linked to communicate and share resources.

Any device in a network that can send/receive data.

A conceptual framework used to understand network communication layers.

A set of communication protocols used for interconnecting network devices.

Wide Area Network; connects multiple LANs over large distances.

Local Area Network; connects computers in a small area, like an office or home.

The arrangement of different elements (links, nodes) in a network.

Voice over Internet Protocol; technology for making voice calls over the internet.

Four layers provide end-to-end services for data transfer: physical, data link, network, transport.

The 7th layer of the OSI Model where users interact with software for data transfer.

A standard protocol for transferring files from a server to a client over a network.

Protocols used for accessing data on the World Wide Web.

Direct exchange of information between two devices over a network.

Protocol used for sending and receiving emails over a network.

The ability of users in a network to access programs, equipment, and data regardless of location.

A protocol that provides access to virtual terminals of remote systems.

The 4th layer of the OSI Model, responsible for end-to-end communication and data flow control.

Ensures data availability through multiple copies on different machines to prevent loss.

The 2nd layer of the OSI Model, responsible for node-to-node data transfer.

Cost efficiency in networking by using cheaper personal computers instead of expensive mainframes.

The capability to expand system resources as workloads increase by adding more components.

Mobile commerce; buying and selling goods via mobile devices.

A technology that enables short-range communication between compatible devices.

Challenges related to freedom and ethics resulting from advancements in technology.

File Transfer Protocol for transferring files over a network.

Simple Mail Transport Protocol for sending electronic mail.

Domain Name Server that resolves IP addresses into domain names.

Transmission Control Protocol, a reliable connection-oriented protocol.

User Datagram Protocol, an unreliable connection-less protocol.

Advantages include scalability and independent operation.

Disadvantages include lack of guaranteed delivery and complexity in replacements.

The first packet-switching network developed by ARPA in 1969.

A faster backbone network created in 1986, leading to widespread Internet use.

The official end of ARPANET as it was absorbed by NSFNET.

The standard protocol for interconnecting networks that facilitated the birth of the Internet.

A non-profit organization coordinating the development and usage of the Internet.

Key elements contributing to the rapid expansion of the Internet, like software and connectivity.

A network setup where all devices connect to a central cable called the bus.

Easy and cheap installation; less cabling needed.

Faulty cable affects all devices; hard to identify faults.

A network structure where all devices connect to a central hub.

The main device in a star topology that routes communication between nodes.

Requires more cabling since each device connects directly to the hub.

How simple it is to set up a network topology.

The process of locating issues in the network.