Telecommunications Network Design & Architecture Flashcards

What is the primary purpose of a network topology?

Answer: Defines arrangement and connections of network devices

Network topology refers to the physical or logical arrangement of elements (links, nodes, etc.) of a communication network. It describes how devices like computers, routers, and switches are interconnected and communicate with each other. Understanding the topology is crucial for designing, troubleshooting, and optimizing network performance and reliability.

Which topology features a central connection point?

Answer: Star topology

In a star topology, all network devices are connected to a central hub, switch, or server. This central connection point acts as a conduit for all data traffic between devices. While easy to install and manage, a major drawback is that if the central device fails, the entire network segment connected to it goes down.

What device connects different networks together?

Answer: Router

A router is a networking device that forwards data packets between computer networks. It connects different networks, such as a local area network (LAN) to the internet (WAN), by determining the best path for data to travel. Routers use IP addresses to direct traffic, ensuring data reaches its intended destination across various interconnected networks.

Which protocol ensures reliable transmission of data?

Answer: TCP

TCP (Transmission Control Protocol) is a core protocol of the internet protocol suite that ensures reliable, ordered, and error-checked delivery of data between applications. It establishes a connection, segments data into packets, reassembles them at the destination, and requests retransmission of any lost packets. This reliability makes it essential for applications like web browsing, email, and file transfer.

What is redundancy in network design?

Answer: Providing backup paths for reliability

Redundancy in network design involves duplicating critical components or providing alternative paths for data transmission. Its primary purpose is to enhance network reliability and availability by ensuring that if one component or path fails, there is a backup to take over. This prevents single points of failure and minimizes downtime, crucial for mission-critical systems.

What type of network covers the largest geographical area?

Answer: Wide Area Network (WAN)

A Wide Area Network (WAN) is a telecommunications network that extends over a large geographical area, often spanning cities, states, or even countries. Unlike LANs, which cover a small area, WANs connect multiple LANs and other networks together. The internet itself is the largest example of a WAN, enabling global communication.

Which technology uses light to transmit data at high speeds?

Answer: Fiber optic cables

Fiber optic cables transmit data using pulses of light through thin strands of glass or plastic. This technology offers significantly higher bandwidth and much faster transmission speeds compared to traditional copper cables. It is also less susceptible to electromagnetic interference, making it ideal for long-distance, high-speed data communication.

What does an IP address uniquely identify?

Answer: A unique network device

An IP (Internet Protocol) address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. It serves two main functions: host or network interface identification and location addressing. This unique identifier allows devices to be located and communicate with each other across a network.

What is the main advantage of using VLANs in network design?

Answer: Improve network segmentation and security

VLANs (Virtual Local Area Networks) allow network administrators to logically segment a single physical network into multiple broadcast domains. This segmentation improves network security by isolating traffic and preventing unauthorized access between different departments or user groups. It also enhances performance by reducing broadcast traffic within each segment.