Lesson 1: Introduction to Computer Networks Flashcards

1
Q

Application Layer

A

Interacts with application programs that incorporate a communication component such as your Internet browser and email

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2
Q

Bus Topology

A

The computers share the media (coaxial cable) for data transmission

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3
Q

CSMA/CD

A

The Ethernet LAN media-access method, carrier sense multiple access with collision detection

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4
Q

Data Link Layer

A

Handles error recovery, flow control (synchronization), and sequencing

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5
Q

Deterministic

A

Access to the network is provided at fixed time intervals

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6
Q

Firewall Protection

A

Used to prevent unauthorized access to your network

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7
Q

Frame

A

Provides grouping of the information for transmission

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8
Q

Host Number (or Host Address)

A

The portion of the IP address that defines the location of the networking device connected to the network; also called the host address

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9
Q

Hotspots

A

A limited geographic area that provides wireless access for the public

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10
Q

Hub

A

Broadcasts the data it receives to all devices connected to its ports

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11
Q

IANA

A

The agency that assigns IP addresses to computer networks

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12
Q

IEEE

A

Institute of Electrical and Electronics Engineers, one of the major standards-setting bodies for technological development

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13
Q

Intranet

A

An internal network that provides file and resource sharing but is not accessed from the Internet

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14
Q

IP Internetwork

A

A network that uses IP addressing for identifying devices connected to the network

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15
Q

ipconfig /all

A

Enables the MAC address information to be displayed from the command prompt

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16
Q

ISP

A

Internet service provider

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17
Q

Link Integrity Test

A

Protocol used to verify that a communication link between two Ethernet devices has been established

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18
Q

Local Area Network (LAN)

A

Network of users that share computer resources in a limited area

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19
Q

(Media Access Control) MAC address

A

A unique 6-byte address assigned by the vendor of the network interface card

20
Q

Mesh Topology

A

All networking devices are directly connected to each other

21
Q

Multiport Repeater

A

Another name for a hub

22
Q

Network Address Translation (NAT)

A

Translates the private IP address to a public address for routing over the Internet

23
Q

Network Interface Card (NIC)

A

The electronic hardware used to interface the computer to the network

24
Q

Network Layer

A

Accepts outgoing messages and combines messages or segments into packets, adding a header that includes routing information

25
Q

OSI

A

Open system interconnect

26
Q

OSI Model

A

The seven layers describing network functions

27
Q

Overloading

A

Where NAT translates the home network’s private IP addresses to a single public IP address

28
Q

Physical Layer

A

Provides the electrical and mechanical connection to the network

29
Q

Ports

A

The interface for the networking devices

30
Q

Presentation Layer

A

Accepts and structures the messages for the application

31
Q

Private Addresses

A

IP addresses set aside for use in private intranets

32
Q

Protocol

A

Set of rules established for users to exchange information

33
Q

Range Extender

A

Device that relays the wireless signals from an access point or wireless router into areas with a weak signal or no signal at all

34
Q

Session Layer

A

Provides the control functions necessary to establish, manage, and terminate the connections

35
Q

Star Topology

A

The most common networking topology in today’s LANs where all networking devices connect to a central switch or hub

36
Q

Stateful Packet Inspection (SPI)

A

Type of firewall that inspects incoming data packets to make sure they correspond to an outgoing request

37
Q

Switch

A

Forwards a frame it receives directly out the port associated with its destination address

38
Q

TCP/IP

A

Transmission Control Protocol/Internet Protocol, the protocol suite used for internetworks such as the Internet

39
Q

Token Passing

A

A technique where an electrical token circulates around a network—control of the token enables the user to gain access to the network

40
Q

Token Ring Hub

A

A hub that manages the passing of the token in a Token Ring network

41
Q

Token Ring Topology

A

A network topology configured in a logical ring that complements the token passing protocol

42
Q

Topology

A

Architecture of a network

43
Q

Transport Layer

A

Is concerned with message integrity between source and destination

44
Q

Uplink Port

A

Allows the connection of a switch to another switch without having to use a crossover cable

45
Q

Virtual Private Network (VPN)

A

Establishes a secure network connection and is a way to protect your LAN’s data from being observed by outsiders