COM 415: Data Communications and Networks

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Questions and Answers

Match the following types of networks with their characteristics:

LAN = A collection of devices connected together in one physical location MAN = A network that connects computers within a metropolitan area VLAN = A logical overlay network that groups together a subset of devices WAN = A network that connects devices over a large geographic area

Match the following advantages of computer networks with their descriptions:

Ease of accessibility = Allows users to easily access shared resources Flexibility = Enables devices to be connected and disconnected as needed Convenient resource sharing = Allows multiple devices to share files and devices Reduced cost = Less expensive than maintaining separate resources

Match the following disadvantages of computer networks with their descriptions:

Lack of robustness = Vulnerability to hardware or software failure Spread of computer virus = Malware can spread quickly across the network Implementation issues = Difficulty in setting up and maintaining the network Health issues = Prolonged computer use can be harmful to health

Match the following network types with their characteristics:

LAN = Smaller than a MAN but larger than a home network MAN = Larger than a LAN but smaller than a WAN VLAN = A logical overlay network that groups devices together WAN = Connects devices over a large geographic area Signup and view all the answers

Match the following benefits of computer networks with their descriptions:

Convenient resource sharing = Allows multiple devices to share files and devices Reduced cost = Less expensive than maintaining separate resources Flexibility = Enables devices to be connected and disconnected as needed Great storage capacity = Allows for larger storage capacity Signup and view all the answers

Match the following network types with their descriptions:

LAN = A collection of devices connected together in one physical location MAN = A network that connects computers within a metropolitan area VLAN = A logical overlay network that groups together a subset of devices WAN = A network that connects devices over a large geographic area Signup and view all the answers

Match the following disadvantages of computer networks with their descriptions:

Implementation issues = Difficulty in setting up and maintaining the network Lack of robustness = Vulnerability to hardware or software failure Health issues = Prolonged computer use can be harmful to health Spread of computer virus = Malware can spread quickly across the network Signup and view all the answers

Match the following benefits of computer networks with their descriptions:

Connectivity = Allows devices to communicate with each other Ease of accessibility = Allows users to easily access shared resources Flexibility = Enables devices to be connected and disconnected as needed Great storage capacity = Allows for larger storage capacity Signup and view all the answers

Match the following types of networks with their descriptions:

WAN = A collection of local-area networks (LANs) or other networks that communicate with one another. Intranet = A private network that is contained within an enterprise and uses Internet protocols. Internet = A worldwide, publicly accessible series of interconnected computer networks. Extranet = A private network that securely shares part of an organization's information with suppliers, vendors, or partners. Signup and view all the answers

Match the following types of networks with their primary users:

WAN = General public Intranet = Employees of an organization Internet = Global community Extranet = Customers, suppliers, or partners Signup and view all the answers

Match the following types of networks with their primary purpose:

WAN = Communication between different networks Intranet = Secure information sharing within an organization Internet = Global information sharing Extranet = Collaboration with external parties Signup and view all the answers

Match the following protocols with their usage in networks:

HTTP = Intranet and Internet FTP = Intranet and Extranet IP = Internet and WAN Packet switching = Internet Signup and view all the answers

Match the following terms with their descriptions:

Network of networks = Internet Private version of the Internet = Intranet Extended Intranet = Extranet Global network = WAN Signup and view all the answers

Match the following types of networks with their accessibility:

WAN = Publicly accessible Intranet = Restricted to employees Internet = Publicly accessible Extranet = Accessible to approved parties Signup and view all the answers

Match the following types of networks with their primary features:

WAN = Collection of local-area networks Intranet = Uses Internet protocols Internet = Global connectivity Extranet = Secure sharing of information Signup and view all the answers

Match the following types of networks with their scope:

WAN = Wide area coverage Intranet = Within an enterprise Internet = Global coverage Extranet = Between organizations Signup and view all the answers

Study Notes

Computer Networks

A network is two or more computers or electronic devices connected together to share data and resources.
Advantages of computer networks:
- Ease of accessibility
- Flexibility
- Convenient resource sharing
- Connectivity
- Great storage capacity
- Reduced cost
Disadvantages of computer networks:
- Lack of robustness
- Spread of computer virus
- Implementation issues
- Lack of productivity
- Health issues

Classification of Computer Networks

Local Area Network (LAN):
- A collection of devices connected together in one physical location
- Can be small or large, ranging from a home network to an enterprise network
- Devices are in a single, limited area
Virtual Local Area Network (VLAN):
- A logical overlay network that groups together a subset of devices on a physical LAN
- Isolates traffic for each group
Metropolitan Area Network (MAN):
- A computer network that connects computers within a metropolitan area
- Larger than a LAN but smaller than a WAN
Wide Area Network (WAN):
- A collection of LANs or other networks that communicate with each other
- A network of networks

Internet and Intranet

Internet:
- A worldwide, publicly accessible series of interconnected computer networks
- Transmits data by packet switching using the standard Internet Protocol (IP)
- A "network of networks" that consists of millions of smaller domestic, academic, business, and government networks
Intranet:
- A private network contained within an enterprise
- Uses Internet protocols and network connectivity to securely share part of an organization's information or operations with its employees
- Can be understood as "a private version of the Internet"

Extranet

An extranet is a private network that uses Internet protocols, network connectivity, and possibly the public telecommunication system to securely share part of an organization's information or operations with external parties.

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Description

Learn about the basics of computer networks, including advantages and benefits of networking, such as ease of accessibility, flexibility, and convenient resource sharing.