Introduction to Computer Networks and Data Communication

Flashcards cover key concepts from Pages 1-5 on computer networks and data communication.

A computer network is a set of __ connected by communication links.

NODES

A node is capable of sending and receiving data; it can be a __, such as a computer or printer.

computer

A communication link can be wired or __.

wireless

A typical example of a network component is a __ (e.g., router, firewall, switch).

Router

The Internet uses the standard protocol __.

TCP/IP

Every computer on the Internet is identified by a unique __ address.

IP

HTTPS stands for __.

Hypertext Transfer Protocol Secure

DNS stands for __.

Domain name server

The Internet is a worldwide __ system of interconnected computer networks.

global

One common use of computer networks is __ sharing.

file

A common use of computer networks is Internet __.

access

Application sharing in networks supports shared applications like database systems, collaboration tools, and __ platforms.

communication

Security measures in networks include firewalls, encryption and __ controls.

access

Data Communication is the process of exchanging data between two devices over a __.

transmission medium

Delivery should be to the correct __.

destination

Accuracy in data communication means delivering data without introducing any __.

errors

Timeliness in data communication means data should be delivered in a __ manner.

timely

Jitter refers to the variation in the __ arrival time.

packet

A __ is a set of rules agreed by both sender and receiver.

protocol

The device that has the data and needs to send it is called the __.

sender

The path by which the messages travel from sender to receiver is the __.

transmission medium

The data or information which needs to be transferred from one device to another is the __.

message

The device which is expecting the data on the network is the __.

receiver

The way in which data is transmitted from one device to another is called the __.

transmission mode

In __ mode, a device can only send data or only receive data.

Simplex

In __ mode, communication can occur in both directions but not at the same time.

Half duplex

In __ mode, communication can occur in both directions simultaneously.

Full duplex

A __ connection provides a dedicated link between two devices.

point-to-point

A __ connection is one in which more than two devices share a single link.

multipoint

In a multipoint environment, the capacity of the channel is __.

shared

NIC stands for __.

Network Interface Card

MAC stands for __.

Media Access Control

A __ operates at Layer 1 (physical layer).

HUB

Bridges learn device locations via __ addresses.

MAC

VLAN is Layer __.

2

A router is a hybrid device that routes traffic between networks and often includes a __.

firewall

Modems (modulator-demodulator) change digital signals to __ for phone lines.

analog

An Access Point extends network access to provide a __ connection.

wireless

Common WIFI security protocols include __, __, and __.

WPA, WPA2, WPA3

A Wireless Router creates networks and shares Internet; a Wireless Access Point __ the network.

extends