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Intro to Networks > Module 3 > Flashcards

Module 3 Flashcards

1
Q

What are the elements of any communication?

A

1) source(sender)
2) destination(receiver)
3) channel (media)

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2
Q

What must a protocol do for successful message delivery?

A

1) An identified sender and receiver
2) Common language and grammar
3) speed and timing of delivery
4)confirmation or acknowledgement requirements

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3
Q

What do protocols include?

A

1) Message encoding
2) Message formatting and encapsulation
3) Message size
4) message timing
5) message delivery options

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4
Q

What is encoding?

A

The process of converting information into another acceptable form

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5
Q

What is decoding?

A

Reverses the process to internet the information

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6
Q

What is flow control?

A

The process of managing the rate of data transmission

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7
Q

What is response timeout?

A

Network protocols that specify how long to wait for responses and what action to take if a timeout occurs

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8
Q

What is access method?

A

Determines when someone can send a message

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9
Q

What is unicast?

A

Information is being transmitted to a single end device

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10
Q

What is multicast?

A

Information is being transmitted to a one or more end devices

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11
Q

What is a broadcast?

A

Information is being transmitted to all end devices

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12
Q

Define network communications protocols?

A

Enable 2 or more devices to communicate over one or more networks

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13
Q

What are examples of network communications protocols?

A

IP, TCP and HTTP

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14
Q

Define network security protocols?

A

Secure data to provide authentication, data integrity, and data encryption

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15
Q

What are examples of network security protocols?

A

SSL, TLS and SSH

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16
Q

What are routing protocols?

A

Enable routers to exchange route information, compare path information and then to select the best path to the destination network

17
Q

What are examples of routing protocols?

A

OSPF and BGP

18
Q

What are service discovery protocols?

A

Used to automatic detection of devices or services

19
Q

What are examples of service discovery protocols?

A

DHCP and DNS

20
Q

What is a protocol suite?

A

A group of inter-related protocols necessary to perform a communication function

21
Q

What are TCP/IP Application layer protocols?

A

HTTP, DNS, DHCP, FTP

22
Q

What are TCP/IP Transport layer protocols?

A

TCP and UDP

23
Q

What are TCP/IP internet layer protocols?

A

IP and ICMP

24
Q

Name TCP/IP Network Access layer protocols?

A

Ethernet, ARP and WLAN

25
Q

What are the 4 benefits of using a layered model?

A

1) assisting in protocol design
2) fostering competition because products vendors can work together
3) preventing technology or capability in one layer from affecting other layers above and below
4) providing a common language to describe networking functions and capabilities

26
Q

What are the 2 models used to describe network operations?

A

OSI and TCP/IP

27
Q

From 7 to 1, what are the OSI layers?

A

7) Application
6) Presentation
5) Session
4) Tranport
3) Network
2) Data Links
1) Physical

28
Q

What are the 4 layers of the TCP/IP model?

A

Application, Transport, Internet and Network Access

29
Q

What are 2 benefits of segmenting?

A

Increases speed and efficiency

30
Q

What is segmentation?

A

Dividing data into smaller, more manageable pieces

31
Q

What is sequencing?

A

Labeling segments for ordering and assembling the pieces when they arrive

32
Q

Define PDU

A

The form that a piece of data takes at any layer

33
Q

What are PDUs called in different layers?

A

*Application layer - Data
*Transport layer - segment (TCP) or Datagram (UDP)
*Network layer - Packet
*Data Link Layer - Frame
Physical Layer - Bits

34
Q

Encapsulation works from ______ to _________.

A

Top to Bottom

35
Q

What is used to identify the network portion of an IP address?

A

The subnet mask

36
Q

What is the left most portion of an IP address?

A

Network portio

37
Q

What is the part of the address that identifies a specific device?

A

Host portion

38
Q

What uses hexadecimal notation?

A

Source and destination MAC addresses in the Ethernet frame on the data link layer

39
Q

Where is an Ethernet frame sent when the sender and receiver of the IP are one different networks?

A

The default gateway or router

Intro to Networks (5 decks)

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