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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
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?
Same Layer Interaction
26
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?
Same Layer Interaction
27
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.
Adjacent Layer Interaction
28
IP resides in which layer of the TCP/IP model
Layer 3
29
Layer 3 provides what service?
Addressing & Routing
30
The IP address 10.0.0.43 is an example of what
DDN - Dotted-Decimal Notation
31
The network layer, using the IP protocol, provides a service of....
forwarding IP packets from one device to another.
32
Layer 1 : The Physical layer defines the...
Hardware and energy used to transmit data over the network.
33
Layer 2: The data-link layer defines the...
rules used to transmit data over the physical network.
34
The data link layer provides services to which layer
Layer 3 - Network
35
Name a Network layer protocol
IPv4, IPv6, DDP, IGMP, ICMP, IPsec, OSPF
36
IEEE defines ethernet in which standard
802.3
37
an IP packet encapsulated between an Ethernet header and Ethernet trailer is referred to as an....
Ethernet frame.
38
The reverse of encapsulation is
de-encapsulation.
39
The process of putting headers (and sometimes trailers) around some data is referred to as...
Encapsulation
40
Data on the transport layer is referred to as a...
Segment
41
Data on the network layer is referred to as a...
Packet
42
Data on the Data-Link layer is referred to as a ....
Frame
43
Which layer encapsulates data with both a Header and sometimes a Trailer
Data Link
44
Layers 5-7 of the OSI model are split up as
Session, Presentation, Application
45
Instead of frame, packet and segment, the OSI model refers to messages as a...
PDU (Protocol Data Unit)
46
What is a PDU
A protocol data unit (Used by the OSI model to refer to frames, segments, packets etc)
47
L3PDU is shorthand for what?
Layer 3 Protocol Data Unit
48
Which layer of the OSI model would an L6PDU be referring to?
Layer 6 - Presentation
49
Which layer of the OSI model would an L5PDU be referring to?
Layer 5 - Session
50
Which layer of the OSI model would a L4PDU be referring to?
Layer 4 - Transport
51
What is Layer 7 of the TCP/IP model?
Application
52
What is Layer 1 of the TCP/IP model?
Physical
53
Which layer controls the rules used to transmit data over the physical layer of the network?
Layer 2 - Data Link
54
Give an example of a networking model.
TCP/IP or OSI
55
A segment exists at which layer of the network model?
Transport Layer
56
A frame exists at which layer of the network model?
Data Link
57
A packet exists at which layer of the network model?
Network Layer
58
An IP packet gets encapsulated between what by the Data-Link layer?
Ethernet Header and Trailer
59
HTTP data is encapsulated between what at the Transport layer?
TCP Header or UDP Header
60
The transport layer does what to a HTTP message before sending it to the network layer?
Encapsulates the data within a transport header.

CCNA 200-301 (2 decks)

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