Networking Fundamentals

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Questions and Answers

What is the primary function of a sender in a data communication system?

To transfer messages from source to destination (correct)

To convert analog signals to digital signals

To decode data messages

To receive data messages

What is the main benefit of networks in organizations?

To reduce communication costs

To limit access to sensitive data

To increase data storage capacity

To encourage teamwork, innovation, and efficient interactions (correct)

What is a crucial aspect of data communication systems?

Transmission medium quality

Message transmission

Protocol adherence (correct)

Data encryption

What is the term for the device that sends data messages in a data communication system?

Sender Signup and view all the answers

What is the definition of a message in a data communication system?

A piece of information to be communicated Signup and view all the answers

What is the primary function of a receiver in a data communication system?

To receive messages from the sender Signup and view all the answers

What type of transmission medium is a fiber optic cable?

Guided Signup and view all the answers

What is the primary purpose of a protocol in data communication?

To govern data communication between devices Signup and view all the answers

What is an example of a protocol used in sending an e-mail?

SMTP Signup and view all the answers

What is necessary for data communication to take place between two devices?

All of the above Signup and view all the answers

What is the primary concern when using the Internet for information discovery?

Verifying the accuracy of the information Signup and view all the answers

What is the primary feature of the Internet that allows anyone to post information?

Democratization of information Signup and view all the answers

What is the result of the introduction of computer and internet facility in the banking industry?

Increased adoption of core banking solutions Signup and view all the answers

What is the common phrase that summarizes the responsibility of users when using the Internet for information discovery?

User beware! Signup and view all the answers

What is the primary benefit of using the Internet for information discovery?

Access to a vast amount of information Signup and view all the answers

What is the primary function of a modem in a computer network?

To convert digital signals into analog signals Signup and view all the answers

What is stored in the ROM of a Network Interface Card (NIC)?

A 48-bit unique serial number Signup and view all the answers

What is the main difference between a hub and a switch in a computer network?

A hub sends data to all ports, while a switch sends data to specific ports Signup and view all the answers

What is the purpose of a router in a computer network?

To forward data packets between computer networks Signup and view all the answers

What is the minimum number of NICs required for a computer to connect to the internet?

One Signup and view all the answers

What is the primary way computers connect to a WAN?

Through the telephone system or satellites Signup and view all the answers

What is a key feature of the Internet?

It enables global communication and data exchange Signup and view all the answers

What is the main purpose of an Extranet?

To connect parts of the intranets of different organizations Signup and view all the answers

What is a characteristic of Intranets?

They use Internet protocols and are only accessible within an organization Signup and view all the answers

What is a key benefit of the Internet for modern businesses?

It enables global communication and data exchange Signup and view all the answers

What is the primary function of a client in a network?

To send messages requesting services from servers Signup and view all the answers

How does a database server typically respond to a client's request?

It sends only the data that satisfies a specific query Signup and view all the answers

What is a feature of a client's ability to converse with servers?

It can converse with many servers concurrently Signup and view all the answers

What is a characteristic of a Personal Area Network (PAN)?

It is a wireless network that connects devices close to one person Signup and view all the answers

What is a key factor in classifying the size of a network?

The geographic area and number of computers Signup and view all the answers

What is the role of a data request server in a network?

To intercept and determine the location of requested data Signup and view all the answers

What is a common way to categorize computer networks?

By the purpose of the network Signup and view all the answers

What is the relationship between a client and a server in a network?

The server provides services to the client Signup and view all the answers

What is a characteristic of the data sent by a database server in response to a client's request?

It is formatted to be understood by the client Signup and view all the answers

What is the scope of devices that can be connected to a computer network?

Devices housed in a single room to millions of devices spread across the world Signup and view all the answers

What is the primary function of the Simple Mail Transfer Protocol (SMTP)?

To facilitate electronic mail transmission Signup and view all the answers

What is the unit of measurement for the total amount of digital information that can be transmitted through a telecommunications medium?

Bits per second Signup and view all the answers

What is the term for the medium of transmitting and receiving information?

Data Communication Media Signup and view all the answers

What is the range of frequencies that can be accommodated on a particular telecommunications channel called?

Bandwidth Signup and view all the answers

What is one cycle of a telecommunications medium equal to?

One hertz Signup and view all the answers

What is the primary advantage of geographically dispersed employees and workgroups sharing documents and ideas through networks?

Improved teamwork and innovation Signup and view all the answers

What is the primary role of the transmission medium in a data communication system?

To transmit data between sender and receiver Signup and view all the answers

What is the primary function of a set of rules (protocol) in a data communication system?

To manage data transmission and reception Signup and view all the answers

What is the primary benefit of networks in facilitating communication between businesses, their partners, and customers?

Enhanced collaboration and more effective interactions Signup and view all the answers

What is the primary responsibility of the sender in a data communication system?

To transmit data to the receiver Signup and view all the answers

What is the primary function of the Simple Mail Transfer Protocol (SMTP) in the context of data communication?

To facilitate electronic mail transmission over the internet Signup and view all the answers

What is the relationship between the frequency of a telecommunications medium and its transmission capacity?

The transmission capacity is directly proportional to the frequency of the medium Signup and view all the answers

What is the unit of measurement for the range of frequencies that can be accommodated on a particular telecommunications channel?

Hertz (Hz) Signup and view all the answers

What is the primary concern when transmitting data over a telecommunications medium?

Ensuring the flow of information Signup and view all the answers

What is the term for the total amount of digital information that can be transmitted through a telecommunications medium?

Transmission capacity Signup and view all the answers

What is the primary concern when using the Internet for information discovery, due to the lack of quality assurance?

User beware! Signup and view all the answers

What is the result of the introduction of computer and internet facility in the banking industry, in terms of service delivery?

Adoption of core banking solution (CBS) platform Signup and view all the answers

What is the primary feature of the Internet that allows anyone to post information, making it a democratic platform?

Decentralized architecture Signup and view all the answers

What is the common phrase that summarizes the responsibility of users when using the Internet for information discovery, due to the lack of quality assurance?

User beware! Signup and view all the answers

What is the primary benefit of using the Internet for information discovery, despite the lack of quality assurance?

Increased accessibility of information Signup and view all the answers

What is the role of transmission medium in data communication?

To act as a bridge between sender and receiver Signup and view all the answers

What is the primary function of protocols in data communication?

To govern data communications Signup and view all the answers

What is necessary for data communication to take place between two devices?

Protocol Signup and view all the answers

What is the primary role of a receiver in a data communication system?

To receive data messages Signup and view all the answers

What is an example of a guided transmission medium?

Fiber optic cable Signup and view all the answers

What is the primary advantage of using Internet protocols in an Intranet?

Allowing users to take advantage of familiar applications and work habits Signup and view all the answers

What is the primary difference between an Intranet and an Extranet?

An Intranet is used for internal communications, while an Extranet is used for external communications Signup and view all the answers

What is the primary feature of the Internet that enables global communication and collaboration?

Its ability to connect approximately one million organizational computer networks Signup and view all the answers

What is the primary purpose of the Internet in modern businesses?

To become a necessity for modern businesses Signup and view all the answers

What is the primary characteristic of an Extranet?

It connects parts of the intranets of different organizations Signup and view all the answers

What is the primary purpose of a modem in a computer network?

To convert digital signals into analog signals Signup and view all the answers

What is the key difference between a hub and a switch in a computer network?

A switch is more intelligent than a hub Signup and view all the answers

What is the minimum number of Network Interface Cards (NICs) required for a computer to connect to the internet?

One Signup and view all the answers

What is the primary function of a router in a computer network?

To forward data packets between computer networks Signup and view all the answers

What is stored in the ROM of a Network Interface Card (NIC)?

A 48-bit unique serial number Signup and view all the answers

What is the primary role of a data request server in a client-server architecture?

To intercept the client's request and determine which database server to forward it to Signup and view all the answers

What is a characteristic of a client in a network?

It can converse with many servers concurrently Signup and view all the answers

What is the primary purpose of a database server in a client-server architecture?

To extract data that satisfies a specific query and send it to the client Signup and view all the answers

What is a key factor in classifying the size of a network?

The geographic area covered by the network Signup and view all the answers

What is a characteristic of a Personal Area Network (PAN)?

It is a type of wireless network Signup and view all the answers

What is the primary function of a client in a network?

To initiate a request for data from a server Signup and view all the answers

What is a common way to categorize computer networks?

By their geographic area and number of devices Signup and view all the answers

What is the primary benefit of client-server architecture?

It enables concurrent communication between clients and servers Signup and view all the answers

What is the primary role of a database server in responding to a client's request?

To extract data that satisfies a specific query and send it to the client Signup and view all the answers

What is the primary purpose of a data request server in a client-server architecture?

To intercept the client's request and determine which database server to forward it to Signup and view all the answers

Study Notes

Data Communication Essentials

Sender and Receiver: Devices like computers and telephones act as senders or receivers in communication, relaying messages or data.
Transmission Medium: Essential for data transfer; it can be guided (e.g., twisted pair cables, fiber optic) or unguided (e.g., radio waves, microwaves) bridging senders and receivers.
Protocols: Rules governing data communication ensure two devices can communicate effectively, exemplified by Simple Mail Transfer Protocol (SMTP) for email.

Internet and Networking Overview

Internet: A vast global WAN connecting approximately one million networks across over 200 countries, facilitating seamless data access and communication.
Intranet vs. Extranet:
- Intranet: Network using Internet protocols for internal communication within an organization.
- Extranet: Connects different organizations' intranets, allowing secure information sharing among business partners.

Components of Data Communication Systems

Message: Core asset representing the information being communicated; can be text, audio, or video files.
Sender: Device that transmits data; could be a computer, mobile, or other electronic devices.
Receiver: Endpoint for the message, mirroring the sender's device types.
Set of Rules (Protocols): Ensure that communication can occur, establishing compatibility between different devices.

Network Architecture

Modem: Converts analog signals to digital signals, enabling communication over various media.
Hub: A basic networking device connecting multiple devices, broadcasting data to all ports indiscriminately.
Switch: Advanced version of a hub that intelligently sends data to specific ports, reducing network congestion.
Router: Forwards data packets between networks, allowing different networks to communicate.

Types of Networks

Personal Area Network (PAN): Connects devices in proximity to an individual, facilitating personal device communication.
Bandwidth: Measurement of transmission speed in bits per second (bps), determining the data capacity of telecommunications mediums.

Alternative Delivery Channels in Banking

Core Banking Solutions (CBS): Adopted by banks to enhance service delivery through computer and internet integration.
Impact on Banking Operations: Networks promote data sharing among employees and enhance teamwork across organizations, essential for modern banking.

Web and Information Caution

Web Information: While the Web offers extensive data access, quality assurance is lacking; users must exercise caution (User beware!).

Key Learning Points

Understanding the roles of different components and how they work together is vital in data communication.
The distinction between internal (Intranet) and inter-organizational (Extranet) networks highlights the importance of secure communications.
Awareness of potential risks when obtaining information from the Web emphasizes the need for critical evaluation of sources.

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Description

Learn about the benefits of networking in organizations, including sharing resources, promoting teamwork and innovation, and facilitating communication with business partners and customers.