Section 2 - Network Models Flashcards

1
Q

___ are used to represent how networks function.

A

Models

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2
Q

Name both network models.

A
  • OSI 7-layer model

- TCP/IP 4-layer model

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3
Q

Data that is sent in chunks is called a __.

A

Frame

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4
Q

Frames are a maximum of __ bytes in size.

A

1500 bytes

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5
Q

What piece of hardware in the computer manifests and digests frames?

A

NIC (Network Interface Card)

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6
Q

Build a model of a frame and include all data chunks contained within a frame.

A

Destination MAC Address –> Source MAC Address –> Ether Type (port number[s]) –> Data –> Frame Check Sequence (FCS)

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7
Q

A MAC address is a unique __-bit identifier for a NIC.

A

48-bit

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8
Q

A __ __ address is included in a frame in order for the destination computer to send data back to it’s source computer.

A

Source MAC address

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9
Q

A __ transmission is addressed to a single node on a network whereas a __ transmission is sent to every node on a network.

A) Unicast, multicast
B) Unicast, broadcast
C) Broadcast, unocast
D) Singlecast, multicast
E) I give up, I don't know
A

B) Unicast, broadcast

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10
Q

Choose the correct IPv6 address.

A) 2001:0D8B8:FE01::
B) :2001:0D8B8:FE01
C) 2001::0D8B8:FE01:4020

A

A) 2001:0D8B8:FE01::

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11
Q

Which part within a frame never changes?

A

IP Packet

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12
Q

__ numbers help direct packet traffic between the source and destination.

A

Port numbers

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13
Q

Packets have __ numbers so the network software can reassemble the file correctly.

A) Port
B) File
C) Sequence

A

C) Sequence

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14
Q

Which is connection-oriented and which is connection-less?

UDP vs TCP

A
Connection-oriented = TCP
Connection-less = UDP
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15
Q

Define binary

A

The 1’s and 0’s that is essentially “data.”

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16
Q

Which part of the network does packetized data live?

A

Frames

17
Q

Repeater (Hub): takes the incoming signal and __ it to all nodes connected.

A

Duplicates or repeats

18
Q

A MAC address is a unique, device-identifying, alphanumeric set of __ characters specific to a piece of hardware. No two devices will ever be manufactured with the same MAC address.

A

12 characters

19
Q

What do the first 3 sets (6 characters) of numbers represent in a MAC address?

A

OEM numbers

20
Q

What do the last 3 sets (6 characters) of numbers represent in a MAC address?

A

Unique ID numbers

21
Q

Routers contain two or more connections and link a __ to other devices, allowing __ between them and the __.

A) Modem, communication, internet
B) Switch, data, network
C) Hub, communication, internet

A

A) Modem, communication, internet

22
Q

What is a routing table?

A

A spec sheet that the router uses to track where to send data.

23
Q

Default Gateway = ???

A

The node in a network that serves as a forwarding host to outside networks.

24
Q

True or False: a sequencing number allows proper reassembly of data.

A

True

25
Q

True or False: an acknowledgement number is a confirmation that data has been sent.

A

False; an acknowledgement number is a confirmation that data has been DELIVERED.

26
Q

Which protocol uses a sequencing number and acknowledgement number?

A) TCP
B) UDP

A

A) TCP

27
Q

Provide the command-line syntax that displays all network information.

A

ipconfig /all

28
Q

The first __ ports are reserved and are known as the “well-known ports.”

A

First 1024 ports

29
Q

What does the acronym FCS stand for? What is the FCS’s function?

A

Frame Check Sequence; verifies that the frame was received in tact with all data present.

30
Q

Provide all layers of the OSI model.

A

1) Physical
2) Data Link
3) Network
4) Transport
5) Session
6) Presentation
7) Application

31
Q

Provide all layers of the TCP/IP model.

A

1) Network Interface
2) Internet
3) Transport
4) Application