Introduction to Networking - Week 2

Practice flashcards covering computer networking concepts, standards, devices, media, and topologies based on the Week 2 lecture transcript.

What is the definition of a computer network or data network?

A series of interconnected nodes that can transmit, receive, and exchange data, voice, and video traffic.

What are examples of nodes in a computer network?

Servers or modems.

Which service enables users to send voice data through internet protocols?

Voice over IP (VoIP)

Which standard is designated for Residential/Light Commercial Wiring?

EIA/TIA 570

What is the purpose of the EIA/TIA 568 standard?

It is the Commercial Building Telecommunications Cabling Standard that describes proper connection using color codes and termination of cable into RJ-45 connectors.

Which standard describes the proper connection of cables from different areas and floors of buildings?

EIA/TIA 569 (Commercial Building Standard for Telecommunications Pathways and Spaces)

What is the role of the EIA/TIA 606 standard?

It serves as a Design Guideline for Administration of Telecommunications Infrastructure in Commercial Buildings, specifically for cable labeling.

What does ANSI stand for?

American National Standards Institute

What is the function of a CSU/DSU in digital lines?

A channel service unit (CSU) and a data service unit (DSU) are required to terminate a digital local loop.

When was the X.21 interface recommended by the CCITT?

In $1976$

What is the EIA-530 (or RS-530) interface?

A balanced serial interface standard that generally uses a $25$-pin connector.

At which layers of the OSI model does a network switch typically operate?

Data Link layer (Layer $2$) and Network layer (Layer $3$).

What are the three implementation layers of a network switch?

Core Layer, Distribution Layer, and Access Layer.

How is a Cisco Router characterized in an enterprise environment?

A network device that forwards data packets from one network to another, capable of handling millions of packets per second, and typically requiring a knowledgeable professional for implementation.

What are the four types of copper media mentioned in the transcript?

Unshielded Twisted Pair (UTP), Foiled Twisted Pair (FTP), Shielded Twisted Pair (STP), and Shielded-Foiled Twisted Pair (SFTP).

What is the composition of a fiber optic cable?

It contains strands of glass fibers inside an insulated casing.

How does wireless media carry data communications?

It carries electromagnetic signals representing binary digits using radio or microwave frequencies.

According to the IEEE standards, what is the maximum data rate and frequency of 802.11ax?

A maximum data rate of $10-12\,Gbps$ at frequencies of $2.4\,GHz$ and $5\,GHz$.

What is an Access Point (AP)?

A device that creates a wireless local area network (WLAN) by connecting to a wired router, switch, or hub and projecting a Wi-Fi signal.

Which networking topology is characterized by all devices being connected to a central switch?

Star Topology

What are the characteristics of a Mesh Topology?

Each node is connected to every other node with a direct link, creating a very reliable network that requires a large amount of cable.

How is a Tree Topology structured?

It is a hierarchical layout that links groups of nodes together, creating parent-child dependencies between root nodes and regular nodes.

What is a Hybrid Topology?

A combination of two or more standard topologies used to link together different existing networks into a unified system.