Which of the following statement(s) is/are correct? I. Metropolitan area network is a collection of Local area network. II. Metropolitan area network support both data and voices transmission.
Both I and II
Understanding Metropolitan Area Networks (MAN)
A Metropolitan Area Network (MAN) is a computer network that spans a metropolitan area, such as a city and its surrounding suburbs. It is larger than a Local Area Network (LAN) but smaller than a Wide Area Network (WAN).
Analyzing Statement I: MAN as a Collection of LANs
Statement I says: Metropolitan area network is a collection of Local area network.
This statement is generally correct. A Metropolitan Area Network is often built by connecting multiple Local Area Networks (LANs) together across a city or large campus. For example, different branches of a company or different buildings of a university within a city might have their own LANs, and a MAN would connect these separate LANs to allow them to communicate with each other. This connection provides high-speed networking across a specific geographical area.
Therefore, Statement I aligns with the definition and typical structure of a Metropolitan Area Network, which serves as an interconnected network for multiple LANs within a limited urban or metropolitan region.
Analyzing Statement II: MAN Support for Data and Voice Transmission
Statement II says: Metropolitan area network support both data and voices transmission.
This statement is also correct. Modern communication networks, including Metropolitan Area Networks, are designed to carry various types of traffic. MANs are used not only for transmitting computer data but also for carrying voice calls (like VoIP - Voice over IP), video traffic (like video conferencing or surveillance feeds), and other multimedia communications. Infrastructure used for MANs, such as fiber optics, provides the necessary bandwidth and capabilities to support this diverse range of transmission types efficiently.
Thus, a Metropolitan Area Network is built to handle both traditional data communication and real-time voice and video transmissions, making it a versatile network type for urban environments.
Conclusion
Based on the analysis of both statements:
- Statement I correctly describes a MAN as being formed by connecting multiple LANs.
- Statement II correctly states that a MAN supports both data and voice transmission.
Therefore, both statements are correct descriptions of characteristics and functions of a Metropolitan Area Network.
| Statement | Description | Correctness |
|---|---|---|
| I | MAN is a collection of Local area network. | Correct |
| II | Metropolitan area network support both data and voices transmission. | Correct |
Revision Table: Metropolitan Area Networks (MAN)
| Network Type | Scope | Examples | Key Characteristics |
|---|---|---|---|
| LAN (Local Area Network) | Small area (house, office, building) | Home Wi-Fi, office network | High speed, limited area |
| MAN (Metropolitan Area Network) | City or large campus | Connecting buildings across a city, campus network | Connects LANs, higher bandwidth than WAN, covers a metro area |
| WAN (Wide Area Network) | Large geographical area (country, continent) | Internet, corporate networks connecting branches globally | Lower speed compared to LAN/MAN, spans vast distances |
Additional Information: MAN Capabilities
Metropolitan Area Networks (MANs) play a crucial role in modern urban digital infrastructure. Here are some additional points about their capabilities:
- High Bandwidth: MANs typically utilize high-bandwidth technologies like fiber optics, which enables them to support high-speed data transfer necessary for aggregated LAN traffic and diverse service types.
- Connectivity: They connect various entities within a city, including businesses, government buildings, schools, and potentially residential areas, facilitating communication and resource sharing.
- Service Delivery: MANs are often used by internet service providers (ISPs) and telecommunication companies to deliver internet access, voice services, and video services to customers within the metropolitan area.
- Reliability: Designed for urban scale, MANs are often built with redundancy to ensure high reliability and availability of network services.
- Standards: Common standards used in MANs include protocols like Ethernet (especially Metropolitan Ethernet or Metro Ethernet) and older technologies like FDDI or DQDB, though Metro Ethernet is predominant now.
Important Questions from Physical Layer
period of a signal is 100 ms. Then the frequency The of this signal in kilohertz is ______.
In the standard Ethernet with transmission rate of 10 Mbps, asssume that the length of the medium is 2500 m and size of a frame is 512 bytes. The propagation speed of a signal in a cable is normally 2 × 108 m/s. The transmission delay and propogation delay are
Data transmission using multiple pathways simultaneously is known as:
- Which layer is responsible for sending data as a bit stream?
Consider the following statements about RS-232 ports and connectors.
S1: DB9 connector is associated with RS-232
S2: RS-232 uses RJ45 connector for standard serial communication
S3: RS-232 communication is point-to-point.
Which statements are TRUE?
