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Cybersecurity > Connect And Protect: Networks And Network Security > Flashcards

Connect And Protect: Networks And Network Security Flashcards

1
Q

Network

A

A group of connected devices

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2
Q

Local Area Network (LAN)

A

A network that spans a small area like an office building, a school or a home

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3
Q

Wide Area Network (WAN)

A

A network that spans a large geographic area like a city, state, or country

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4
Q

Hub

A

A network device that broadcasts information to every device on the network

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5
Q

Switch

A

A device that makes connections between specific devices on a network by sending and receiving data between them

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6
Q

Router

A

A network device that connects multiple networks together

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7
Q

Modem

A

A device that connects your router to the internet and brings internet access to the LAN

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8
Q

Virtualization Tools

A

Pieces of software that perform network operations

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9
Q

Cloud Computing

A

The practice of using remote servers, applications, and network services that are hosted on the internet instead of on local physical devices

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10
Q

Cloud Network

A

A collection of servers or computers that stores resources and data in remote data centers that can be accessed via the internet

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11
Q

Cloud Service Providers Offer

A

On demand storage, processing power, analytics

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12
Q

Cloud Service Provider (CSP)

A

A company that offers cloud computing services

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13
Q

Software as a Service (SaaS)

A

Refers to software suites operated by the CSP that a company can use remotely without hosting the software

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14
Q

Infrastructure as a service (Iaas)

A

Refers to the use of virtual computer components offered by the CSP. These include virtual containers and storage that are configured remotely through the CSP’S API or web console

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15
Q

Platform as a Service

A

Refers to tools that application developers can use to design custom applications for their company

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16
Q

Benefits of Cloud Computing and Software Defined Network

A

Reliability, cost, and scalability

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17
Q

Data Packet

A

A basic unit of information that travels from one device to another within a network

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18
Q

Bandwidth

A

The amount of data a device receives every second

19
Q

Speed

A

The rate at which data packets are received or downloaded

20
Q

Packet Sniffing

A

The practice of capturing and inspecting data packets across a network

21
Q

Transmission Control Protocol (TCP)

A

An internet communication protocol that allows two devices to form a connection and stream data

22
Q

Internet Protocol (IP)

A

A set of standards used for routing and addressing data packets as they travel between devices on a network

23
Q

Port

A

A software based location that organizes the sending and receiving of data between devices on a network

24
Q

Port 25

A

Email

25
Q

Port 443

A

Secure internet communication

26
Q

Port 20

A

Large file transfers

27
Q

TCP/IP Model

A

A framework used to visualize how data is organized and transmitted across the network

28
Q

Layers of the TCP/IP Model

A

Network access layer, internet layer, transport layer, application layer

29
Q

Network Access Layer (Data Link Layer)

A

Organizes sending and receiving data frames within a single network. Corresponds to the physical hardware involved in network transmission

30
Q

Address Resolution Protocol (ARP)

A

Assists IP with directing data packets on the same physical network by mapping IP addresses to MAC addresses on the same physical network

31
Q

Internet Layer (Network Layer)

A

Responsible for ensuring the delivery to the destination host, which potentially resides on a different network. IP and ICMP

32
Q

Internet Control Message Protocol (ICMP)

A

Shares error information and status updates or data packets

33
Q

Transport Layer

A

Responsible for reliably delivering data between two systems or networks. TCP and UDP are the two transport protocols that occur at this layer

34
Q

User Datagram Protocol (UDP)

A

Used by applications that are not concerned with the reliability of the transmission. Typically for video streaming

35
Q

Application Layer

A

Responsible for making network requests or responding to requests

36
Q

HTTP

A

Hypertext transfer protocol

37
Q

SMTP

A

Simple mail transfer protocol

38
Q

SSH

A

Secure shell

39
Q

FTP

A

File transfer protocol

40
Q

DNS

A

Domain name system

41
Q

OSI Model

A

A standardized concept that describes the seven layers computers use to communicate and send data over the network

42
Q

OSI Model 7 Layers

A

Application, presentation, session, transport, network, data link, physical

43
Q

Internet Protocol (IP) Address

A

A unique string of characters that identifies the location of a device on the internet

44
Q

MAC Address

A

A unique alphanumeric identifier that is assigned to each physical device on a network

Cybersecurity (3 decks)

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