Different network can be linked using?

SJH Nursing Officer - 2019

Computer and Nursing Information

Easy

Appeared in: SJH Nursing Officer - 2019

Explanation

The primary function of a router is to connect different networks.
A router operates at the Network Layer (Layer 3) of the OSI model, using IP addresses to make decisions about forwarding data packets.
A standard personal computer (PC) can be equipped with multiple network cards and specialized software to perform the functions of a dedicated router.
This setup allows it to link separate Local Area Networks (LANs) or connect a LAN to a Wide Area Network (WAN), like the internet.

Option A: A remote PC is a client machine, not a networking device. It is an endpoint used to access a network, not to connect different networks together.
Option C: A disk server, or file server, is a computer on a network that provides storage space for files. Its function is data storage and retrieval, not linking networks.
Option D: A modem (Modulator-Demodulator) is a device that converts digital signals from a computer into analog signals for transmission over a phone line or cable, and vice versa. It typically connects a single network to an Internet Service Provider (ISP), but it does not link multiple different networks together (e.g., two separate LANs).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Function of Network Hardware as background academic context rather than a clinical decision trigger.
In a hospital setting, routers are critical for connecting the networks of different departments (e.g., laboratory, radiology, administration) to the main hospital network.
This interconnection allows for the seamless and secure sharing of patient data, such as Electronic Health Records (EHRs), lab results, and imaging scans, which is essential for coordinated patient care.
What if? - If a hospital did not use routers and only used switches, all departments would be on a single, large network. This would create significant security risks, as a breach in one area could compromise the entire hospital's data. It would also lead to network congestion and poor performance.

How to Approach the Question

First, identify the key function described in the question: 'linking different networks'.
Next, analyze the primary role of each device listed in the options.
A 'remote PC' is a user endpoint. A 'disk server' is for storage. A 'modem' is for connecting to the internet over a specific line type.
Recognize that a 'router' is the specific device designed to connect and forward traffic between distinct networks.
Conclude that a 'router PC', a computer configured to act as a router, is the correct choice for this function.

Concept Tested & Keywords

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E6 Principles and Practice of NURSING Management Leadership for BSc Nursing 3rd Edi Jogindra Vati — Subpart B (pp 340-678 of 1017) p. 328-330

E6 Textbook of Nursing Management and Leadership I. Clemen — Subpart C (pp 655-967 of 982) p. 23-25