CS356 EXAM 2024/ NEWEST CS356 FINAL EXAM 2024
ALL 174 COMPLETE REAL EXAM QUESTIONS AND WELL
ELABORATED ANSWERS (VERIFIED ANSWERS) LATEST
UPDATES 2024 | ALREADY GRADED A+ (BRAND NEW!!)
Network - ANSWER: collection of devices that are interconnected. made up of hosts
and switches.
Hosts - ANSWER: Devices at the end that send and receive messages. Can be any
device connected to the internet.
Switches - ANSWER: Connect hosts and control the flow of data
n*(n+1)/2 - ANSWER: The amount of connections needed if there were no switches
Switches make networks better BUT - ANSWER: They add complexity through routing
Network Edge - ANSWER: Where the hosts exist, they are connected to the core by
switches
Network Core - ANSWER: The interworkings of a network where hosts are trying to
get data from one edge to the other
Network Layers - ANSWER: 5: Application, Transport, Network, Link ,Physical
Application Layer - ANSWER: Software that uses the network
Transport - ANSWER: Oversees sending and receiving data
Network - ANSWER: Gets data where it needs to go
Link - ANSWER: Locally connects devices
Physical - ANSWER: Physically connects devices
Issues with Layers - ANSWER: Layers were not intended to overlap however they do
mainly the network layer
4 types of Delays - ANSWER: Propagation
Transmission
Processing
Queueing
Processing Delay - ANSWER: The time taken to determine where to send the packet
, Transmission Delay - ANSWER: Time taken to load the data onto the physical wire
Dt=L/R --> Bits/bits per second
Propagation Delay - ANSWER: Tie it takes to send bits over the physical wire.
Dp = d/s --> length of physical wire/speed of data being sent
s = usually the speed of light
Queueing Delay - ANSWER: Caused by the other types of delay. When the other
forms of delay cause a hold up in packets and they then get added to a queue until
they are ready to be processed
Traffic intensity - ANSWER: If the traffic intensity gets too large it can cause the
queue to explode and back the system up
Throughput - ANSWER: The amount of data you can send through a specific link
Each link has its own throughput
Bottleneck Link - ANSWER: In a system of links the throughput will be the one of the
smallest link
Multiple Throughput - ANSWER: When multiple devices are trying to connect to the
same device the throughput is slashed by the number of devices
Protocol - ANSWER: A set of rules that states how communication between parties
should work
Each layer has its own protocol
Algorithm - ANSWER: A procedure that is used to solve a problem
Purpose of Link Layer - ANSWER: Moves data to the next step of the process.
Involves protocols such as wifi and ethernet
When your device wants to send data somewhere, where does it send it to -
ANSWER: NIC
What is the NIC - ANSWER: Network Interface Chip
MAC address - ANSWER: A 48 bit address written in Hexidecimal form
This is the personal address that is given to every device and travels with in through
any network
IP address - ANSWER: 32 bit address given to a device by the network
Usually written in decimal format: 128.12.16.1
ARP Table - ANSWER: Where our MAC and IP addresses are stored. Also give a Time
to Live
ALL 174 COMPLETE REAL EXAM QUESTIONS AND WELL
ELABORATED ANSWERS (VERIFIED ANSWERS) LATEST
UPDATES 2024 | ALREADY GRADED A+ (BRAND NEW!!)
Network - ANSWER: collection of devices that are interconnected. made up of hosts
and switches.
Hosts - ANSWER: Devices at the end that send and receive messages. Can be any
device connected to the internet.
Switches - ANSWER: Connect hosts and control the flow of data
n*(n+1)/2 - ANSWER: The amount of connections needed if there were no switches
Switches make networks better BUT - ANSWER: They add complexity through routing
Network Edge - ANSWER: Where the hosts exist, they are connected to the core by
switches
Network Core - ANSWER: The interworkings of a network where hosts are trying to
get data from one edge to the other
Network Layers - ANSWER: 5: Application, Transport, Network, Link ,Physical
Application Layer - ANSWER: Software that uses the network
Transport - ANSWER: Oversees sending and receiving data
Network - ANSWER: Gets data where it needs to go
Link - ANSWER: Locally connects devices
Physical - ANSWER: Physically connects devices
Issues with Layers - ANSWER: Layers were not intended to overlap however they do
mainly the network layer
4 types of Delays - ANSWER: Propagation
Transmission
Processing
Queueing
Processing Delay - ANSWER: The time taken to determine where to send the packet
, Transmission Delay - ANSWER: Time taken to load the data onto the physical wire
Dt=L/R --> Bits/bits per second
Propagation Delay - ANSWER: Tie it takes to send bits over the physical wire.
Dp = d/s --> length of physical wire/speed of data being sent
s = usually the speed of light
Queueing Delay - ANSWER: Caused by the other types of delay. When the other
forms of delay cause a hold up in packets and they then get added to a queue until
they are ready to be processed
Traffic intensity - ANSWER: If the traffic intensity gets too large it can cause the
queue to explode and back the system up
Throughput - ANSWER: The amount of data you can send through a specific link
Each link has its own throughput
Bottleneck Link - ANSWER: In a system of links the throughput will be the one of the
smallest link
Multiple Throughput - ANSWER: When multiple devices are trying to connect to the
same device the throughput is slashed by the number of devices
Protocol - ANSWER: A set of rules that states how communication between parties
should work
Each layer has its own protocol
Algorithm - ANSWER: A procedure that is used to solve a problem
Purpose of Link Layer - ANSWER: Moves data to the next step of the process.
Involves protocols such as wifi and ethernet
When your device wants to send data somewhere, where does it send it to -
ANSWER: NIC
What is the NIC - ANSWER: Network Interface Chip
MAC address - ANSWER: A 48 bit address written in Hexidecimal form
This is the personal address that is given to every device and travels with in through
any network
IP address - ANSWER: 32 bit address given to a device by the network
Usually written in decimal format: 128.12.16.1
ARP Table - ANSWER: Where our MAC and IP addresses are stored. Also give a Time
to Live
