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Network + > Lesson 5 TCP IP Addressing > Flashcards

Lesson 5 TCP IP Addressing Flashcards

1
Q

TCP IP protocol suite defines what

A

how applications on separate nodes establish and track connections

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2
Q

Why was TCP IP developed

A

To allow the addition of hardware and create a more flexible architecture

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3
Q

TCP stack has how many layers

A

Four

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4
Q

What are the TCP stack layers

A

Application
Transport
Internet
Network Access

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5
Q

Compare the OSI model to the TCP model

A

d

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6
Q

Which TCP layer adds a trailer during encapsulation

A

Network Access

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7
Q

Which TCP layers add a header during encapsulation

A

Application
Transport
Internet

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8
Q

Describe a connection-oriented protocol

A

The connection must be established before data is sent

TCP

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9
Q

Describe a connection-less protocol

A

The connection does not need to be established before data is sent

UDP

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10
Q

Connection-oriented protocols have how many stages

A

Three

  1. Connection is established and parameters are negotiated
  2. Devices transfer data
  3. Connection is released and torn down
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11
Q

Do connection-less protocols have stages for connections

A

No

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12
Q

Can connection-oriented protocols work in uni direction or bir directional environments

A

Bi-direction only

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13
Q

What are the two TCP/IP transport layer protocols

A

TCP and UDP

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14
Q

Name a transport protocol

A

TCP and UDP

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15
Q

TCP does what to a datagram

A

breaks them down into smaller segments

Reassembles them

Waits for acknowledgement of received data

Retransmits them if necessary

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16
Q

Describe the three-way handshake

A

SYN

SYN-ACK

ACK

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17
Q

What must happen before a client can establish an active connection

A

The server must perform an passive open then the client can perform an an active open

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18
Q

SYN

A

Client sends a syn packet to the serve with a sequence number

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19
Q

Are the three way handshake sequence numbers random

A

Yes – The number is random value A

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20
Q

SYN-ACK

A

The server sends a syn-ack to the client with a sequence number with a value of A+1

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21
Q

ACK

A

The client send a ack to the server with a sequence number of B+1

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22
Q

Describe UDP

A

User Datagram Protocol

Connectionless Protocol

Best effort deliverary protocol

Smaller header than TCP therefore it means faster more effcient delivery

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23
Q

What uses UDP

A

VOIP
Streaming real-time video
Network management applications

24
Q

When performance is more important than delivery which protocol should you use UDP or TCP

A

UDP

25
Q

IP works at which OSI layer

A

Layer 3

26
Q

Describe IP

A

It is a connection-less protocol

Works as an intermediary between network and higher protocols

27
Q

IP makes no guarantee of

A

Packet delivery

Corruption of data or lost packets

28
Q

IP works with TCP or UDP

A

True

29
Q

When TCP is used with IP, which one gurantees deliverary and the connection

A

TCP = deliverary

IP = connection

30
Q

Describe ICMP

A

Used with IP to report the condition of connections between two nodes

ICMP reports errors

Connectionless

Works at layer 3

31
Q

When a nodes buffler is being flooded, what happens

A

The node sends an ICMP source quench signal to the transmitting node

32
Q

ICMP Destination Unreacheable Means

A

Destination cannot be contacted

33
Q

ICMP Echo and Echo Reply are used when

A

Pinging a system

34
Q

Is ICMP traffic usually blocked on the network

A

Yes

35
Q

Name the IP protocols

A 
UDP
TCP
IGMP
ICMP
ARP
36
Q

Describe IGMP

A

Supports multicasting

OPerates at Layer 3

Provides one to many communications

37
Q

IGMP is best for what

A

Streaming videos or deploying images to multiple systems

38
Q

Describe ARP

A

Address Resolution Protocol

Maps IP address to a physical or MAC address

Works at Layer 2 of the OSI but encapsulated by an Ethernet header

39
Q

How does ARP work

A

It receives an address from IP

If it knows the MAC address for that IP it will send it. If it doesn’t know the MAC address, it will send out a broadcast to resolve the IP address.

The node with that IP address will send a unicast transmission with its MAC address

40
Q

Protocol Analyzer are also called

A

Network analyzer

41
Q

Protocol analyzers can look at packets at which OSI layers

A

Physical
Data
Network
Transport

42
Q

Can a protocol analyzer look at all channels on a wireless network at one time

A

NO

43
Q

Can a protocol analyzer look at the complete wired network at one time

A

Yes or it can look at certain segments

44
Q

What are some uses of protocol analyzers

A

Detecting network intrusions

Analyzing network traffic patterns and potential problems

Monitoring network usage and performance factors

Filtering undesirable network traffic

Launching an eavesdropping attack

45
Q

Protocol Analyzers can be software or hardware

A

Yes

46
Q

What do protocol analyzers need in order to capture all packets

A

Analyzers must have a network adapter

Analyzers must be placed in promiscuous mode

47
Q

How can you decrease the number of ACKs on a TCP/IP network

A

Increase the PDU size

48
Q

Administrators must configure what on a TCP/IP network

A

Default Gateway

Subnet mask

IP address

49
Q

IP V4 address have how many bits

A

32

50
Q

IPV6 addresses have how many bits

A

128

51
Q

IP addresses are shown as

A

Dotted Decimals

52
Q

What is a subnet mask

A

A number assigned to each host for dividing the IP address into network and node potions

53
Q

First Octet from 1-127 has a default Subnet Mask of

A

255.0.0.0

54
Q

First Octet from 128 -191 has a default Subnet Mask of

A

255.255.0.0

55
Q

First Octet from 192-223 has a default Subnet Mask of

A

255.255.255.0

56
Q

Are these subnet masks permitted

  1. 0.0.0
  2. 255.0.0
  3. 255.255.0
  4. 255.128.0
  5. 255.255.244
A

Yes

57
Q

Are these subnet masks permitted

  1. 0.255.0
  2. 255.292.255
  3. 240.254.0
  4. 255.0.192
A

No

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