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ICND1 100-101 > Definitions > Flashcards

Definitions Flashcards

Learn important definitions for ICND1 100-101

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1
Q

adjacent layer interaction

A

when a process communicates w/ a process that is a layer above or below it. Normally requesting service or delivering info.

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2
Q

deencapsulation

A

stripping a header for a specific layer off the “data” and using it.

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3
Q

encapsulation

A

adding a header to a piece of data from a layer above it.

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4
Q

frame

A

a layer 2 data unit

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5
Q

networking model

A

a model that breaks up the process of data transport

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6
Q

packet

A

a layer 3 data unit

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7
Q

PDU

A

the OSI generic term for a chunk of data. Normally annotated LxPDU

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8
Q

same layer interaction

A

the interaction of processes on machines communicating with eachother

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9
Q

segment

A

a layer 4 data unit

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10
Q

leased line

A

a point to point data connection that appears as a single physical cable

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11
Q

wide area network

A

a network or part of a network that crosses a large physical area. Often connects two LANs. often out of users control.

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12
Q

telco

A

telecommunications company

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13
Q

serial interface

A

an interface that sends data serially

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14
Q

HDLC

A

High-level data link control. A WAN protocol.

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15
Q

DSL

A

Digital Subscriber Line. A WAN technology that uses phone lines as layer 1 links.

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16
Q

Cable internet

A

A WAN link that uses cable lines to transport data.

17
Q

DSL modem

A

a device that separates data from voice signals and enables broadband communication on a phone line.

18
Q

Ethernet over MPLS (EoMPLS)

A

Appears logically identical to an ethernet link

19
Q

command-line interface (CLI)

A

a shell that responds to commands for human computer interaction

20
Q

Telnet

A

unsecure IPv4 machine to machine communication.

21
Q

Secure Shell (SSH)

A

secure (encrypted) IPv4 machine to machine communication

22
Q

enable mode

A

allows a user to run more privelidged commands

23
Q

user mode

A

allows a user to run basic commands that don’t affect the function of an IOS device

24
Q

configuration mode

A

allows a user to manipulate the configuration of an IOS device

25
Q

startup config file

A

the file that’s stored on the NVRAM which is used as the running configuration upon startup.

26
Q

running config file

A

the config file that’s stored in RAM and is actively used during a devices operation. This is lost if the machine is shut down without saving it.

27
Q

local username

A

a locally stored username and password referenced for security purposes and login services

28
Q

VLAN interface

A

the interface that is used for Switch administration.

29
Q

port security

A

using security settings on ports. Includes limiting number of different users based on MAC addresses.

30
Q

802.1Q

A

Trunk protocol that uses a 4 byte header to identify which VLAN a frame belongs to

31
Q

trunk

A

a connection between devices that carries traffic from different VLANs.

32
Q

trunking administrative mode

A

sets an interfaces purpose as one end of a trunk

33
Q

trunking operational mode

A

?

34
Q

VLAN

A

virtual LAN. A logical broadcast domain.

35
Q

VTP

A

VLAN Trunking Protocol. A proprietary Cisco feature that spreads VLAN information in a network so that Cisco devices can discover different VLANs.

36
Q

VTP transparent mode

A

effectively turns VTP off for the device

37
Q

Layer 3 switch

A

a switch that basically has a router built into it.

38
Q

access interface

A

an interface that is used by an end machine to connect to the network

39
Q

trunk interface

A

an interface that is used by a network device to move traffic between devices that keeps VLANs separate.

ICND1 100-101 (2 decks)

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