3.2. Communication and Internet technologies
A subsection of Computer Science, 9608, through 3. Advanced Theory
Listing 10 of 44 questions
The TCP/IP protocol suite can be viewed as a stack with four layers. Complete the stack by inserting the names of the three missing layers. Application layer BitTorrent is a protocol used at the Application layer for the exchange of data. State the network model used with this protocol. State the use of BitTorrent. Explain how the exchange of data is achieved using BitTorrent. State two additional protocols that are also used at the Application layer for the exchange of data. For each protocol, give an example of an appropriate exchange of data. Protocol 1 Example Protocol 2 Example
9608_s17_qp_32
THEORY
2017
Paper 3, Variant 2
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The TCP/IP protocol suite is used on the Internet. The table has statements about transmitting data across the Internet. Put a tick (✓) in each row to identify whether the responsibility belongs to TCP or IP. Responsibility TCP IP Correct routing Host to host communication Communication between networks Retransmitting missing packets Reassembling packets into the correct order Identify two other internet protocols. State a use for each protocol. Protocol 1 Use Protocol 2 Use State the name of the TCP/IP layer that uses IP addresses. Emails are transmitted across the Internet using packet switching and routing tables. Give four items of data in an IP data packet. Describe two benefits of using packet switching. Benefit 1 Benefit 2 Give two items of data stored in a routing table.
9608_s18_qp_32
THEORY
2018
Paper 3, Variant 2
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An email is sent from one email server to another using packet switching. State two items that are contained in an email packet apart from the data. Explain the role of routers in sending an email from one email server to another. Sending an email message is an appropriate use of packet switching. Explain why this is the case. Packet switching is not always an appropriate solution. Name an alternative communication method of transferring data in a digital network. Name an application for which the method identified in part is an appropriate solution. Justify your choice. Application Justification
9608_w15_qp_31
THEORY
2015
Paper 3, Variant 1
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An email is sent from one email server to another using packet switching. State two items that are contained in an email packet apart from the data. Explain the role of routers in sending an email from one email server to another. Sending an email message is an appropriate use of packet switching. Explain why this is the case. Packet switching is not always an appropriate solution. Name an alternative communication method of transferring data in a digital network. Name an application for which the method identified in part is an appropriate solution. Justify your choice. Application Justification
9608_w15_qp_33
THEORY
2015
Paper 3, Variant 3
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The TCP/IP protocol suite can be viewed as a stack with four layers. Complete the stack by inserting the names of the three missing layers. Transport State how each layer of the stack is implemented. A computer is currently running two processes: • Process 1 is downloading a web page. • Process 2 is downloading an email. Describe two tasks that the Transport layer performs to ensure that the incoming data is downloaded correctly. Name a protocol that will be used by Process 1. Name a protocol that will be used by Process 2.
9608_w16_qp_31
THEORY
2016
Paper 3, Variant 1
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The TCP/IP protocol suite can be viewed as a stack with four layers. Complete the stack by inserting the names of the three missing layers. Transport State how each layer of the stack is implemented. A computer is currently running two processes: • Process 1 is downloading a web page. • Process 2 is downloading an email. Describe two tasks that the Transport layer performs to ensure that the incoming data is downloaded correctly. Name a protocol that will be used by Process 1. Name a protocol that will be used by Process 2.
9608_w16_qp_33
THEORY
2016
Paper 3, Variant 3
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A local college has CSMA/CD in operation on its Local Area Network (LAN). One function of CSMA/CD is to monitor traffic on the network. State two other tasks performed by CSMA/CD. The network uses the TCP/IP protocol to transfer files across the network. State three functions of the TCP part of this protocol. State two functions of the IP part of this protocol. Identify one other common protocol that could be used to transfer files across the college network. Protocols are essential for successful transmission of data over a network. The TCP/IP protocol suite operates on many layers. Give an appropriate protocol for each layer in the table. Layer Protocol Application Transport Internet The TCP/IP protocol is used to send an email message from one node on a LAN to a node on a different LAN. State the steps that take place when the email message is sent and received.
9608_w18_qp_31
THEORY
2018
Paper 3, Variant 1
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A local college has CSMA/CD in operation on its Local Area Network (LAN). One function of CSMA/CD is to monitor traffic on the network. State two other tasks performed by CSMA/CD. The network uses the TCP/IP protocol to transfer files across the network. State three functions of the TCP part of this protocol. State two functions of the IP part of this protocol. Identify one other common protocol that could be used to transfer files across the college network. Protocols are essential for successful transmission of data over a network. The TCP/IP protocol suite operates on many layers. Give an appropriate protocol for each layer in the table. Layer Protocol Application Transport Internet The TCP/IP protocol is used to send an email message from one node on a LAN to a node on a different LAN. State the steps that take place when the email message is sent and received.
9608_w18_qp_33
THEORY
2018
Paper 3, Variant 3
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Questions Discovered
44