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Data Communications > CCNA CHAPTER 2 (PASAR) > Flashcards

CCNA CHAPTER 2 (PASAR) Flashcards

1
Q

Was created by by the DoD to ensure data integrity, as well as maintain communications during war.

A

Transmission Control Protocol/Internet Protocol

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2
Q

Is a condensed version of the OSI Model

A

DoD Model

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3
Q

TCP/IP Model Layers

A

Process/Application Layer
Host-to-Host Layer
Internet Layer
Network Access Layer

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4
Q

TCP/IP layer that defines protocols for node to node application communication and also controls user-interface specifications

A

Application Layer

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5
Q

TCP/IP that takes care of the addressing of host by giving them an IP address

A

Internet Layer

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6
Q

TCP/IP layer that creates reliable end-to-end communication and ensuring the error-free delivery of data.

A

Host-to-Host Layer

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7
Q

TCP/IP layer that monitors the data exchange between the host and the network.

A

Network Access Layer

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8
Q

Is the chameleon of protocols and its specialty is terminal emulation

A

Telnet

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9
Q

Protocol that actually lets us to transfer files

A

File Transfer protocol

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10
Q

Stripped down, stock version of FTP

A

Trivial File Transfer Protocol

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11
Q

Protocol specializing in file sharing

A

Network File System

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12
Q

IS used to send email

A

SMTP

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13
Q

Is used to receive email

A

POP3

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14
Q

Protocol designed for printer sharing

A

Line Printer Daemon

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15
Q

Defines a protocol for writing clients/server applications based on a GUI

A

X Window

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16
Q

Collects and manipulates valuable network information

A

SNMP

17
Q

A report delimiting the operational traits of a healthy network

A

baseline

18
Q

Resolves hostnames

A

DNS

19
Q

Assigns IP addresses to hosts

A

DHCP

20
Q

Information a DHCP server can provide

A

IP Address
Subnet Mask
Domain Name
Default Gateway(routers)
DNS
WINS information

21
Q

Takes large block of information from an application and breaks them into segments.

A

TCP

22
Q

The TCP header is ___bytes long, or up to ___ bytes with options.

A

20 ; 24

23
Q

The port number of the application on the host sending the data.

A

Source port

24
Q

The port number of the application requested on the destination host.

A

Destination port

25
Q

A number used by TCP that puts the data back in the correct order or retransmits missing or damaged data, a process called sequencing.

A

Sequence number

26
Q

The TCP octet that is expected next.

A

Acknowledgment number

27
Q

The number of 32-bit words in the TCP header. This indicates where the data begins. The TCP header (even one including options) is an integral number of 32 bits in length.

A

Header length

28
Q

Always set to zero.

A

Reserved

29
Q

Control functions used to set up and terminate a session.

A

Code bits

30
Q

The window size the sender is willing to accept, in octets.

A

Window

31
Q

The cyclic redundancy check (CRC), because TCP doesn’t trust the lower layers and checks everything. The CRC checks the header and data fields.

A

Checksum

32
Q

A valid field only if the Urgent pointer in the code bits is set. If so, this value indicates the offset from the current sequence number, in octets, where the first segment of non-urgent data begins.

A

Urgent

33
Q

May be 0 or a multiple of 32 bits, if any. What this means is that no options have to be present (option size of 0). However, if any options are used that do not cause the option field to total a multiple of 32 bits, padding of 0s must be used to make sure the data begins on a 32-bit boundary.

A

Options

34
Q

Handed down to the TCP protocol at the Transport layer, which includes the upper-layer headers.

A

Data

35
Q
  • Scaled down economy model of TCP/IP model
  • referred to as thin model
A

UDP

36
Q

Considered as a connectionless protocol

A

UDP

37
Q

Specifies whether fragmentation should occur.

A

Flags

38
Q

Unique IP-packet value.

A

Identification

Data Communications (6 decks)

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