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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

53
Q

What does RG stand for when talking about coaxial cables

A

Radio Guide

54
Q

Bayonet-Concelmen Connector/ British-Naval Connector

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

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

74
Q

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

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

79
Q

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

80
Q

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

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

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

88
Q

What joins two or more LAN segments

89
Q

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

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)

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

95
Q

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

96
Q

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

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

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

103
Q

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

Comptia Network + (1 decks)

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