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06 -TCP/IP and UDP

 1. Read the following historical excerpt on TCP/IP and decide/research whether it is true or false.
In March 1982, the US Department of Defense declared TCP/IP as the 
standard for all military computer networking. In 1985, the 
Internet Architecture Board held a three day workshop on TCP/IP 
for the computer industry, attended by 250 vendor representatives, 
promoting the protocol and leading to its increasing commercial use

  TRUE

  FALSE

 2. The _________ in the world, TCP/IP protocol suite, was designed in 1970s by 2 DARPA scientists—Vint Cerf and Bob Kahn, persons most often called the fathers of the Internet
tcpipudp_cerfandkahn.jpg

   most popular network protocol

  most famous cable architecture

  most popular modem

  most used internet service provider

 3. TCP stands for Transmission Central Protection

  FALSE

  TRUE

 4. TCP/IP is…

  A set of foundational cables that lie under the atlantic ocean

  The very first form of an internet service provider (ISP)

  A set of physical 'layers' that are at the very core of the internet

  The protocol (two parts TCP and IP) that is used for communicating over the internet

 5. The TCP protocol prepares messages for transmission and reassembles any received messages.

  FALSE

  TRUE

 6. When sending data the TCP rules (protocols) include:

  Adding a sequence number to each packet so that the packet can be reassembled

  Dividing the message into packets

  Adding extra error correction information so that errors can be spotted and fixed

  All of the above

 7. When receiving data the TCP rules(protocols) will check to see if all packets are present and if so….

  use the error correction information to remove errors and return to sender

  use the sequence number of each packet to re-assemble the message

  send all the packets back to the sender

  use the sequence number of each packet to return the packets to the sender

 8. The receiving TCP rules also…

  spot IP addresses that are unauthenticated and potentially dangerous

  spot missing packets and request for them to be re-sent

  None of the above

  spot cables that are old and not suitable for data transmission

 9. When transmitting messages, this protocol is responsible for providing the destination address and recognising incoming data packets

  UDP

  FTP

  TCP

  IP

 10. For sending data the IP rules or protocols include adding the destination address to each data packet and….

  Adding extra error correction information so that errors can be spotted and fixed

  Dividing the message into packets

  All of the above

  adding its own address to indicate the source / where it came from

 11. For receiving data packets IP protocols (rules) include accepting data packets that have its own address attached and…

  None of the above

  ignoring all data packets that do not contain its own address

  Dividing the message into packets

  Adding extra error correction information so that errors can be spotted and fixed

 12. Both TCP and UDP are both protocols used for sending bits of data — known as packets — over the Internet. TCP isn't the only protocol!

  TRUE

  FALSE

 13. UDP stands for User Datagram Protocol — a datagram is the same thing as a packet of information. It works…

  similarly to TCP, but it throws all the error-checking stuff out.

  like the IP and FTP protocols combined together

  completely differently to TCP and is more like SMTP and FTP

  exactly like TCP - there is no difference

 14. When using UDP, packets are just sent to the recipient. The sender will not wait to make sure the recipient received the packet — it will just continue sending the next packets.

  TRUE

  FALSE

 15. UDP is used when speed is desirable and error correction is not necessary. For example, UDP is frequently used for live broadcasts and online games

  FALSE

  TRUE