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CCNA 200-301 > 1. Introduction to TCP/IP > Flashcards

1. Introduction to TCP/IP Flashcards

1
Q

The IT world refers to a network created by one corporation or enterprise, for the purpose of allowing its employees to communicate as a ….

A

Enterprise Network

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2
Q

OSI?

A

Open Systems Interconnection

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3
Q

ISO?

A

International Organization for Standardization

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4
Q

A less formal than OSI effort to create an open, vendor-neutral networking model by the U.S. DoD let to the creation of

A

TCP/IP

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5
Q

To define a protocol, TCP/IP uses documents called…

A

Requests for Comments (RFC)

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6
Q

The IEEE defines the standard for what within the TCP/IP model

A

Ethernet

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7
Q

Name the layers of the TCP/IP Model

A

Application, Transport, Network, Data Link, Physical

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8
Q

Which layer focuses on how to transmit bits over each individual link?

A

Layer 1 - Physical

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9
Q

Which layer focuses on how to send data over one type of link.

A

Layer 2 - Data Link

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10
Q

Name common Data Link protocols

A

Ethernet, Wireless Ethernet, Point to Point Protocol

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11
Q

Which two layers focus on the applications that need to send and receive data?

A

Transport, Application

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12
Q

Name the layer: HTTP

A

Application

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13
Q

Name the layer: TCP

A

Transport

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14
Q

Name the layer: IP

A

Network

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15
Q

Name the layer: ICMP

A

Network

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16
Q

Name the layer: Ethernet

A

Data-Link

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17
Q

Name the layer: POP3

A

Application

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18
Q

Name the layer: UDP

A

Transport

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19
Q

Each layer encapsulates the data with its own…

A

headers (and trailers)

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20
Q

The two most common transport layer protocols are?

A

TCP & UDP

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21
Q

Name a service TCP provides to the application layer

A

Error Recovery

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22
Q

To recover from errors TCP uses the concept of ….

A

Acknowledgements

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23
Q

A TCP SEQ number refers to…

A

Sequence Number

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24
Q

HTTP using TCP to perform error recover is an example of what?

A

Adjacent Layer Interaction

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25
Q

TCP creating a TCP header with sequence number on one machine to be received and reacted to by another machine is an example of what?

A

Same Layer Interaction

26
Q

The two computers use a protocol to communicate with the same layer on another computer. The protocol defines a header that communicates what each computer wants to do - this is an example of what?

A

Same Layer Interaction

27
Q

On a single computer, one lower layer provides a service to the layer just above. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.

A

Adjacent Layer Interaction

28
Q

IP resides in which layer of the TCP/IP model

A

Layer 3

29
Q

Layer 3 provides what service?

A

Addressing & Routing

30
Q

The IP address 10.0.0.43 is an example of what

A

DDN - Dotted-Decimal Notation

31
Q

The network layer, using the IP protocol, provides a service of….

A

forwarding IP packets from one device to another.

32
Q

Layer 1 : The Physical layer defines the…

A

Hardware and energy used to transmit data over the network.

33
Q

Layer 2: The data-link layer defines the…

A

rules used to transmit data over the physical network.

34
Q

The data link layer provides services to which layer

A

Layer 3 - Network

35
Q

Name a Network layer protocol

A

IPv4, IPv6, DDP, IGMP, ICMP, IPsec, OSPF

36
Q

IEEE defines ethernet in which standard

A

802.3

37
Q

an IP packet encapsulated between an Ethernet header and Ethernet trailer is referred to as an….

A

Ethernet frame.

38
Q

The reverse of encapsulation is

A

de-encapsulation.

39
Q

The process of putting headers (and sometimes trailers) around some data is referred to as…

A

Encapsulation

40
Q

Data on the transport layer is referred to as a…

A

Segment

41
Q

Data on the network layer is referred to as a…

A

Packet

42
Q

Data on the Data-Link layer is referred to as a ….

A

Frame

43
Q

Which layer encapsulates data with both a Header and sometimes a Trailer

A

Data Link

44
Q

Layers 5-7 of the OSI model are split up as

A

Session, Presentation, Application

45
Q

Instead of frame, packet and segment, the OSI model refers to messages as a…

A

PDU (Protocol Data Unit)

46
Q

What is a PDU

A

A protocol data unit (Used by the OSI model to refer to frames, segments, packets etc)

47
Q

L3PDU is shorthand for what?

A

Layer 3 Protocol Data Unit

48
Q

Which layer of the OSI model would an L6PDU be referring to?

A

Layer 6 - Presentation

49
Q

Which layer of the OSI model would an L5PDU be referring to?

A

Layer 5 - Session

50
Q

Which layer of the OSI model would a L4PDU be referring to?

A

Layer 4 - Transport

51
Q

What is Layer 7 of the TCP/IP model?

A

Application

52
Q

What is Layer 1 of the TCP/IP model?

A

Physical

53
Q

Which layer controls the rules used to transmit data over the physical layer of the network?

A

Layer 2 - Data Link

54
Q

Give an example of a networking model.

A

TCP/IP or OSI

55
Q

A segment exists at which layer of the network model?

A

Transport Layer

56
Q

A frame exists at which layer of the network model?

A

Data Link

57
Q

A packet exists at which layer of the network model?

A

Network Layer

58
Q

An IP packet gets encapsulated between what by the Data-Link layer?

A

Ethernet Header and Trailer

59
Q

HTTP data is encapsulated between what at the Transport layer?

A

TCP Header or UDP Header

60
Q

The transport layer does what to a HTTP message before sending it to the network layer?

A

Encapsulates the data within a transport header.

CCNA 200-301 (2 decks)

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