Connect And Protect: Networks And Network Security

Question 1

Network

Answer 1

A group of connected devices

Question 2

Local Area Network (LAN)

Answer 2

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

Question 3

Wide Area Network (WAN)

Answer 3

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

Question 4

Hub

Answer 4

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

Question 5

Switch

Answer 5

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

Question 6

Router

Answer 6

A network device that connects multiple networks together

Question 7

Modem

Answer 7

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

Question 8

Virtualization Tools

Answer 8

Pieces of software that perform network operations

Question 9

Cloud Computing

Answer 9

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

Question 10

Cloud Network

Answer 10

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

Question 11

Cloud Service Providers Offer

Answer 11

On demand storage, processing power, analytics

Question 12

Cloud Service Provider (CSP)

Answer 12

A company that offers cloud computing services

Question 13

Software as a Service (SaaS)

Answer 13

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

Question 14

Infrastructure as a service (Iaas)

Answer 14

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

Question 15

Platform as a Service

Answer 15

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

Question 16

Benefits of Cloud Computing and Software Defined Network

Answer 16

Reliability, cost, and scalability

Question 17

Data Packet

Answer 17

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

Question 18

Bandwidth

Answer 18

The amount of data a device receives every second

Question 19

Speed

Answer 19

The rate at which data packets are received or downloaded

Question 20

Packet Sniffing

Answer 20

The practice of capturing and inspecting data packets across a network

Question 21

Transmission Control Protocol (TCP)

Answer 21

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

Question 22

Internet Protocol (IP)

Answer 22

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

Question 23

Port

Answer 23

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

Question 24

Port 25

Answer 24

Email

Question 25

Port 443

Answer 25

Secure internet communication

Question 26

Port 20

Answer 26

Large file transfers

Question 27

TCP/IP Model

Answer 27

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

Question 28

Layers of the TCP/IP Model

Answer 28

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

Question 29

Network Access Layer (Data Link Layer)

Answer 29

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

Question 30

Address Resolution Protocol (ARP)

Answer 30

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

Question 31

Internet Layer (Network Layer)

Answer 31

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

Question 32

Internet Control Message Protocol (ICMP)

Answer 32

Shares error information and status updates or data packets

Question 33

Transport Layer

Answer 33

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

Question 34

User Datagram Protocol (UDP)

Answer 34

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

Question 35

Application Layer

Answer 35

Responsible for making network requests or responding to requests

Question 36

HTTP

Answer 36

Hypertext transfer protocol

Question 37

SMTP

Answer 37

Simple mail transfer protocol

Question 38

SSH

Answer 38

Secure shell

Question 39

FTP

Answer 39

File transfer protocol

Question 40

DNS

Answer 40

Domain name system

Question 41

OSI Model

Answer 41

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

Question 42

OSI Model 7 Layers

Answer 42

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

Question 43

Internet Protocol (IP) Address

Answer 43

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

Question 44

MAC Address

Answer 44

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