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CCNA 200-301 > Day 31 > Flashcards

Day 31 Flashcards

1
Q

Describe OSI vs TCP/IP Model

A

OSI - 7 Layers

TCI/IP - 4 (Network, Internet, Transport, Application)

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2
Q

OSI L7

A

Application

Refers to the interfaces between network and application software. Also includes authentication services .

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3
Q

Which layer includes authentication?

A

L7 - Application

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4
Q

OSI L6

A

Presentation

Defines the format and organization of data. Includes ENC

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5
Q

Which layer includes encryption?

A

L6 - Presentation

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6
Q

OSI L5

A

Session

Establishes and maintains end-to-end bidirectional flows between endpoints.

Includes Managing transaction flows

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7
Q

OSI L4

A

Transport

Host-to-Host Communications, including connection establishment and termination, flow control, error recovery, and segmentation of large data.

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8
Q

OSI L3

A

Network

Logical Addressing, routing, and path determination

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9
Q

OSI L2

A

Data Link

Formats data into frames appropriate for transmission onto some physical medium.

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10
Q

OSI L1

A

Physical

Defines the electrical, optical, cabling required for transmitting bits.

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11
Q

TCP/IP Layer 4

A

Application

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12
Q

TCP/IP Layer 3

A

Transport

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13
Q

TCP/IP Layer 2

A

Internet

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14
Q

TCP/IP Layer 1

A

Network Access

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15
Q

TCP/IP Application Layer Protocols

A

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

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16
Q

TCP/IP Transport Layer Protocols

A

TCP/UDP

17
Q

TCP/IP Internet Layer Protocols

A

IP, ARP, ICMP

18
Q

DNS

A

Domain Name System

Provides the IP address of a website or domain name.

Port 53

19
Q

Telnet

A

Enables admin to log in to a host from a remote location.

Port 23

20
Q

SMTP

A

Simple Mail Transfer Protocol

Sending of email.

Port 25

21
Q

POP3

A

Post Office Protocol

Sending of email.

Port 110

22
Q

IMAP

A

Internet Message Access Protocol

Sending of email

23
Q

DHCP

A

Dynamic Host Configuration Protocol

Assigns IP addressing to clients

Port 67, 68

24
Q

HTTP

A

Transfers data between web clients

Port 80

25
Q

FTP

A

File Transfer Protocol

Facilitates the download and upload of files between FTP client and FTP Server

Port 20, 21

26
Q

SNMP

A

Simple Network Messaging Protocol

Enables Network management systems to monitor devices attached to the network.

Port 161

27
Q

TCP

A

Supports virtual connections between hosts on the network.

28
Q

UDP

A

Connectionless

29
Q

ARP

A

Address Resolution Protocol

Finds a host’s hardware address when only the IP address is known.

30
Q

ICMP

A

Internet Control Message Protocol

Sends error and control messages.

31
Q

OSI L7 PDU

A

Data

32
Q

OSI L6 PDU

A

Data

33
Q

OSI L5 PDU

A

Data

34
Q

OSI L4 PDU

A

Segment

35
Q

OSI L3 PDU

A

Packet

36
Q

OSI L2 PDU

A

Frame

37
Q

OSI L1 PDU

A

Bits

CCNA 200-301 (6 decks)

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