Day 31 - Networking Models, Devices and Components Flashcards

1
Q

What are the 7 layers of the OSI Model?

A

Application
Presentation
Session
Transport
Network
Datalink
Physical

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1
Q

What are the 4 layers of the TCP/IP Model?

A

Application
Transport
Internet
Network Access

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2
Q

What layers of the OSI Model coincide with the Network Access layer of the TCP/IP Model?

A

Datalink and Physical

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3
Q

This layer refers to interfaces between network and application software. Also, it includes authentication services.

A

Application

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4
Q

This layer defines the format and organization of data. Also, it includes encryption.

A

Presentation

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5
Q

This layer establishes and maintains end-to-end bidirectional flows between endpoints. It also includes managing transaction flows.

A

Session

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6
Q

This layer provides a variety of services between two host computers, including connection establishment and termination, flow control, error recovery, and segmentation of large data blocks into smaller parts for transmission

A

Transport

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7
Q

This layer refers to logical addressing, routing, and path determination

A

Network

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8
Q

This layer formats data into frames appropriate for transmission onto some physical medium. It also defines rules for when the medium can be used. It also defines the means by which to recognize transmission errors

A

Datalink

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9
Q

This layer defines the electrical, optical, cabling, connectors, and procedural details required for transmitting bits represented as some form of energy passing over a physical medium

A

Physical

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10
Q

This layer of the TCP/IP model represents data to the user and controls dialogue

A

Application

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11
Q

This layer of the TCP/IP model supports communication between diverse devices across diverse networks

A

Transport

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12
Q

This layer of the TCP/IP model determines the best path through the network

A

Internet

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13
Q

This layer of the TCP/IP model controls the hardware devices and media that make up the network

A

Network Access

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14
Q

What protocols are used at the Transport layer of both models?

A

TCP, UDP

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15
Q

What protocols are used at the Internet layer of the TCP/IP Model?

A

IP, ARP, ICMP

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16
Q

What are some examples of protocols used at the Application layer of the TCP/IP Model?

A

DNS, Telnet, SMTP, POP3, IMAP, DHCP, HTTP, FTP, SNMP

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17
Q

This provides the IP Address of a website or domain name so that a host can connect to it

A

DNS

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18
Q

This enables administrators to log in to a host from a remote location

A

Telnet or SSH

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19
Q

These 3 protocols facilitate the sending of email messages between clients and servers

A

SMTP, POP3 and IMAP

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20
Q

This assigns IP Addresses to requesting clients

A

DHCP

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21
Q

This protocol transfers information between web clients and web servers

A

HTTP(S)

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22
Q

This facilitates the download and upload of files between an FTP client and an FTP server

A

FTP

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23
Q

This enables network management systems to monitor devices attached to the network

A

SNMP

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24
Q

This transport layer protocol supports virtual connections between hosts on the network to provide reliable delivery of data

A

TCP

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25
Q

This supports faster, unreliable delivery of lightweight or time-sensitive data

A

UDP

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26
Q

This provides a unique global address to computer for communicating over the network

A

IP

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27
Q

This finds a hosts hardware address when only the IP Address is known

A

ARP

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28
Q

This sends error and control messages, including reachability of another host and availability of services

A

ICMP

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29
Q

This serves as the most popular LAN standard for framing and preparing data for transmission onto the media

A

Ethernet

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30
Q

This includes both IEEE 802.11 standards for wireless local-area networks and cellular access options

A

Wireless

31
Q

Name the PDU units for each OSI Layer

A

Application - Data
Presentation - Data
Session - Data
Transport - Segment
Network - Packet
Datalink - Frame
Physical - Bit

32
Q

This protocol supports error recovery to the application layer through the use of basic acknowledgement logic

A

TCP

33
Q

This Transport layer function enables receiving hosts to choose the correct application for which the data is destined, based on the destination port number

A

Multiplexing using ports

34
Q

This Transport layer function has the process of numbering and acknowledging data with Sequence and Acknowledgement header fields

A

Error Recovery (Reliability)

35
Q

This Transport layer function has a process that involve a sliding size that the two end devices dynamically agree upon at various points during the virtual connection

A

Flow control using Windowing

36
Q

This Transport layer function has a process that is used to initialize port numbers and Sequence and Acknowledgment fields

A

Connection establishment and termination

37
Q

This Transport layer function has a continuous stream of bytes from an upper-layer process that is ‘segmented’ for transmission and delivered to upper-layer processes at the receiving device, with the bytes in the same order

A

Ordered data transfer and data segmentation

38
Q

What port number is TFTP?

A

69

39
Q

What port number is DNS?

A

53

40
Q

What port number is SNMP?

A

161

41
Q

What protocol does SNMP use?

A

UDP

42
Q

What port number does DHCP use?

A

67 and 68

43
Q

What protocol does DHCP use?

A

UDP

44
Q

What protocol does DNS use?

A

TCP and UDP

45
Q

_________ handles the flow control through a process called _________ ?

A

TCP
Windowing

46
Q

This protocol is a connection-less protocol

A

UDP

47
Q

True or False: UDP does still provide data transfer and multiplexing using port numbers

A

True

48
Q

Access layer switches provide what types of features?

A

Port Security
VLANs
FastEthernet/GigabitEthernet
PoE
Link Aggregation
QoS

49
Q

Distribution layer switches provide what types of features?

A

Layer 3 support
High forwarding rate
Gig Ethernet / 10 Gig Ethernet
Redundant Components
Security policies / ACLs
Link Aggregation
QoS

50
Q

Core layer switches provide what types of features?

A

Layer 3 support
Very high forwarding rate
Gigabit Ethernet / 10 Gigabit Ethernet
Redundant components
Link Aggregation
QoS

51
Q

This is a network device, either hardware or software based, that control access to the organizations network

A

Firewall

52
Q

This is a passive detection system. It can detect the presence of an attack, log the information and send an alert. Sits alongside traffic

A

IDS

53
Q

This is an active device that continually scans the network, sits inline with traffic looking for inappropriate activity

A

IPS

54
Q

What features do a NGFW offer?

A

Traditional firewall features
Application visibility and control (AVC)
Advanced Malware Protection (AMP)
URL Filtering

55
Q

WLCs can use the older lightweight access point protocol or the more current protocol called __________?

A

CAPWAP (Control and Provisioning of Wireless Access Points)

56
Q

The three basic forms of network media are what?

A

Copper Cable
Fiber-optic Cable
Wireless

57
Q

What type of cable would you use to connect a switch to a router Ethernet port?

A

Straight through

58
Q

What type of cable would you use to connect a computer to a switch?

A

Straight through

59
Q

What type of cable would you use to connect switch to a switch?

A

Crossover

60
Q

What type of cable would you use to connect router to a router?

A

Crossover

61
Q

What type of cable would you use to connect computer to a computer?

A

Crossover

62
Q

What type of cable would you use to connect a computer to a hub?

A

Straight through

63
Q

A __________ is a network of computers and other components located relatively close together in a limited area

A

LAN

64
Q

A __________ generally connects LANs that are geographically separated

A

WAN

65
Q

What does SOHO stand for?

A

Small office Home office

66
Q

SOHO routers function as what?

A

Access Point, Switch and Router

67
Q

What is needed for a home SOHO setup?

A

Computer
Broadband access (DSL or Cable)
VPN router or client software installed on the computer

68
Q

What type of topology is this?

A

Ring

69
Q

What type of topology is this?

A

Mesh

70
Q

What type of topology is this?

A

Point to Point

71
Q

What type of topology is this?

A

Star

72
Q

What type of topology is this?

A

Partial Mesh

73
Q

What type of topology is this?

A

Bus

74
Q

What type of topology is this?

A

Extended Star

75
Q

What hierarchical design is this?

A

2 Tier Collapsed Core

76
Q

What are hierarchical design is this?

A

3 Tier Campus Design