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Comptia Network + > Module 1-3 Computer Network Fundamentals, OSI, Network Components > Flashcards

Module 1-3 Computer Network Fundamentals, OSI, Network Components Flashcards

1
Q

This seven layer model categorizes various network technologies.

A

Open Systems Interconnect (OSI)

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2
Q

The name given to data at different layers of the OSI model

A

Protocol Data Unit (PDU)

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3
Q

How to represent binary with the presence or absence of voltage/ light

A

Current State Modulation

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4
Q

How to represent binary with the transition between voltage/ light.

A

State Transition Modulation

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5
Q

A mathematical algorithm that is executed on a data string by both the sender and receiver of the data string to see if it is corrupted

A

Cyclic Redundancy Check (CRC)

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6
Q

Layer 1 of the OSI Model

A

Physical Layer

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7
Q

PDU of layer 1 of the OSI Model

A

Bits

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8
Q

Layer 2 of the OSI Model

A

Data Link Layer

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9
Q

PDU of layer 2 of the OSI Model

A

Frames

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10
Q

Layer 3 of the OSI Model

A

Network Layer

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11
Q

PDU of layer 3 of the OSI Model

A

Packets

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12
Q

Layer 4 of the OSI Model

A

Transport Layer

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13
Q

PDU of layer 4 of the OSI Model

A

Segments

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14
Q

Layer 5 of the OSI Model

A

Session Layer

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15
Q

Layer 6 of the OSI Model

A

Presentation Layer

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16
Q

Layer 7 of the OSI Model

A

Application Layer

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17
Q

What is the layer name in the TCP/IP Stack that encompasses the technologies in layers 1 & 2 of the OSI Model

A

Network Interface Layer

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18
Q

What is the layer name in the TCP/IP Stack that encompasses the technology in layer 3 of the OSI Model

A

Internet Layer

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19
Q

What is the layer name in the TCP/IP Stack that encompasses the technology in layer 4 of the OSI Model

A

Transport Layer

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20
Q

What is the layer name in the TCP/IP Stack that encompasses the technologies in layers 5, 6 & 7 of the OSI Model

A

Application Layer

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21
Q

Supports different communications sessions on the same physical media by allowing to sessions to take turns in a defined time slot

A

Time-division Multiplexing (TDM)

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22
Q

A connection oriented transmission protocol providing reliable transport. (If a a segment is dropped the sender can detect and retransmit the dropped segment)

A

Transmission Control Protocol (TCP)

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23
Q

A connectionless oriented transmission protocol providing unreliable transport. (If a segment is dropped the sender is unaware and no retransmission occurs)

A

User Datagram Protocol (UDP)

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24
Q

TCP/IP Stack is also referred to as.

A

The DoD Model

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25
Q

Cabling that is twisted and shielded with a metallic layer

A

Shielded Twisted Pair (STP)

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26
Q

Cabling that is twisted tighter and not shielded with a metallic layer

A

Unshielded Twisted Pair (UTP)

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27
Q

An electromagnetic waveform that can interfere with network cabling

A

Electromagnetic Interference (EMI)

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28
Q

What type of cabling is used in raised flooring buildings or buildings with open-air return ducts

A

Plenum

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29
Q

Cabling that has a large enough core to allow the injection of light at multiple angles

A

Multimode Fiber (MMF)

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30
Q

Cabling that has a core large enough to permit a single path of light

A

Single-mode Fiber (SMF)

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31
Q

What performs the task of taking a domain name and resolves that name into the corresponding IP address

A

Domain Names System server (DNS)

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32
Q

Dynamically assigns IP address information to network devices

A

Dynamic Host Configuration Protocol (DHCP)

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33
Q

Provides client address hiding from outside network

A

Proxy Server

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34
Q

A dedicated appliance whose role is to locally cache content received from a remote network

A

Content Engine

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35
Q

An appliance used to load-balance requests for content across a group of servers containing that content

A

Content Switch

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36
Q

What allows a single server to host multiple virtual instances of various operating systems

A

Virtual Server

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37
Q

Allows a user to store data in a centralized data center, as opposed to the hard drive of the local computer

A

Virtual Desktop

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38
Q

In the context of virtual technologies this refers to hosting virtual devices of hardware physically located in a corporate data center

A

Onsite

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39
Q

In the context of virtual technologies this refers to hosting virtual devices of hardware physically located in a service providers data center

A

Offsite

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40
Q

A service provider where clients can purchase data services (ex. DNS) traditionally hosted in corporate data centers

A

Network as a Service (NaaS)

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41
Q

Usually A VoIP telephony solution hosted by a service provider, which interconnects with a company’s existing telephone system

A

Virtual Private Branch Exchange (PBX)

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42
Q

A VoIP signaling protocol used to setup, maintain, and tear down VoIP phone calls

A

Session Initiation Protocol (SIP)

43
Q

A layer 4 protocol that carries voice and interactive video

A

Real-time Transport Protocol (RTP)

44
Q

Providing applications or application services via the cloud

A

Software as a Service (SaaS)

45
Q

The category of cloud permits the delivery of operation systems and libraries needed by developers

A

Platform as a Service (PaaS)

46
Q

Providing network infrastructure as a service using cloud technologies

A

Infrastructure as a Service (IaaS)

47
Q

An approach to computer networking that allows network administrators to programmatically initiate, control, change and manage network behavior dynamically via open interfaces and provide abstraction of lower-level functionality

A

Software Defined Networking (SDN)

48
Q

Referred to as the “brains” of the SDN network

A

Software Defined Networking (SDN) Controller

49
Q

Technology that permits SAN traffic of FC over the Ethernet Media

A

Fibre Channel over Ethernet (FCoE)

50
Q

A specialized network for the storage of data

A

Storage Area Network (SAN)

51
Q

Typically used for short-distance applications, such as carrying composite video between two nearby devices

A

RG-59 Cable

52
Q

Used by local cable companies to connect individual homes to the cable companies distribution network

A

RG-6

53
Q

What does RG stand for when talking about coaxial cables

A

Radio Guide

54
Q

Bayonet-Concelmen Connector/ British-Naval Connector

A

BNC

55
Q

Connector often used for cable TV connections

A

F-Connector/ F-Type

56
Q

Category 3/ CAT 3 cable was used with what network and carries what data rate

A

10Base-T
10Mbps

57
Q

Category 5/ CAT 5 cable was used with what network and carries what data rate

A

100Base-T
100Mbps

58
Q

Category 5e/ CAT5e cable is used with what network and carries what data rate

A

100Base-TX
1Gbps

59
Q

Category 6/ CAT6 cable is used with what network and carries what data rate

A

1000Base-T
1Gbps

60
Q

Category 6a/ CAT6a cable is used with what network and carries what data rate

A

10GBase-T
10Gbps

61
Q

What type of cable (used with an RJ-45 connector and swaps the transmit and receive wire pairs) is for connecting technology in the same OSI Layer

A

Crossover

62
Q

What type of cable (used with an RJ-45 connector and does not swap the transmit and receive wire pairs) is for connecting technology in different OSI Layers

A

Straight-through

63
Q

What port is traditionally found in a PC NIC

A

Media-Dependent Interface (MDI)

64
Q

What port is traditionally found on an Ethernet Switch that reverses the transmit and receive pairs

A

Media-Dependent Interface Crossover (MDIX)

65
Q

What does is found on a PC that allows it to connect to the network

A

Network Interface Card (NIC)

66
Q

What wire connector is found in most Ethernet networks and has 8 pins

A

A type 45 Registered Jack/ RJ-45

67
Q

What wire connector is found in most home telephone networks and has 6 pins

A

A type 11 Registered Jack/ RJ-11

68
Q

What Fiber-Optic connector has a long tip extending from it

A

Straight Tip (ST)/ Bayonet Connector

69
Q

What Fiber-Optic connector is a push pull type connector that is square

A

Subscriber Connector (SC)/ Standard Connector/ Square Connector

70
Q

What Fiber-Optic connector has a tab that needs to be pressed when removing it

A

Lucent Connector (LC)

71
Q

What Fiber-Optic connector is a push pull type with two fiber strands in one connector

A

Mechanical Transfer Registered Jack (MTRJ)

72
Q

what can be used to convert for example Single-Mode Fiber (SMF) to Multi-Mode Fiber (MMF), SMF or MMF to Ethernet

A

Media Convertor

73
Q

What was used in an Intermediate Distribution Frame (IDF) was traditionally used in corporate environments for cross-connection phone system cabling and does not support higher-speed LAN technologies

A

66 Block

74
Q

What is used in an Intermediate Distribution Frame (IDF) replaced the 66 Block and supports higher-speed LAN technologies

A

110 Block

75
Q

What centralized thing connects multiple Intermediate Distribution Frames (IDF)

A

Main Distribution Frame (MDF)

76
Q

What allows wireless clients to connect to a wired network by communicating via radio waves

A

Wireless Access Point (AP)

77
Q

What refers to connecting everyday objects to the internet in order to make them “smart”

A

Internet of Things (IoT)

78
Q

What wireless communication protocol is used primarily for home automation

A

Z-Wave

79
Q

What wireless communication protocol is used primarily for monitoring sensor data (eg heart rate)

A

ANT+

80
Q

What wireless technology allows devices to communicate in short distances creating a Personal Area Network (PAN)

A

Bluetooth

81
Q

What is a set of communication protocols that enables two devices to transfer information

A

Near Field Communication (NFC)

82
Q

What wireless technology permits data transmission in short-range communication among computer peripherals and personal digital assistants

A

Infrared (IR)

83
Q

What wireless technology uses electromagnetic fields to identify and track tags attached to objects

A

Radio-Frequency Identification (RFID)

84
Q

What layer 1 device receives data in one port and then transmits that data out every other port

A

Hub

85
Q

What type Hub does not amplify (electronically regenerate) received bits

A

Passive Hub

86
Q

What type of Hub regenerates received bits

A

Active Hub

87
Q

What type of Hub has enhanced features like Simple Network Management Protocol (SNMP) support

A

Smart Hub

88
Q

What joins two or more LAN segments

A

Bridge

89
Q

What Layer 2 device can dynamically learn MAC addresses attached to its various ports

A

Switch

90
Q

What Layer 3 device can forward based off upper layer information

A

Multilayer Switch

91
Q

What Layer 3 devices forwards information based off logical addresses (IP Addresses)

A

Router

92
Q

What type of network is used to make secure connections through untrusted networks

A

Virtual Private Network (VPN)

93
Q

What dedicated device can terminate a VPN circut

A

VPN Concentrator

94
Q

What network security appliance allows traffic originated inside the network to go out to the internet but does not allow traffic originated in the internet to go into the network

A

Firewall

95
Q

An address record that maps a host name to an IPV4 address

A

A

96
Q

An address record that maps a host name to an IPV6 address

A

AAAA

97
Q

An alias of an existing record allowing multiple DNS records to map to the same IP address

A

A Canonical Name (CNAME)

98
Q

A record that maps to an email server for that domain

A

Mail Exchange (MX)

99
Q

a record that delegates a DNS Zone to use the given authoritative names server

A

NS

100
Q

A record that points to a Canonical Name

A

A Point Record (PTR)

101
Q

A record that provided authoritative information about a DNS zone

A

A State of Authority Record (SOA)

102
Q

A generalized service location record

A

SRV

103
Q

A record originally used for arbitrary human-readable text in a DNS Server

A

TXT

Comptia Network + (1 decks)

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