Podcast
Questions and Answers
What primarily contributes to the file transfer overhead when transferring a file across a network?
What primarily contributes to the file transfer overhead when transferring a file across a network?
- User permissions settings
- Header information and error-checking mechanisms (correct)
- Data encoding techniques
- File compression methods
What is the purpose of the Cyclic Redundancy Check (CRC) in data transmission?
What is the purpose of the Cyclic Redundancy Check (CRC) in data transmission?
- To compress data
- To encrypt data
- To detect errors (correct)
- To enhance the transmission speed
In the OSI model, port and sequence numbers are associated with which layer?
In the OSI model, port and sequence numbers are associated with which layer?
- Transport Layer (correct)
- Data Link Layer
- Application Layer
- Network Layer
Which of the following addresses is classified as a loopback address?
Which of the following addresses is classified as a loopback address?
What is the length of an IPv6 address?
What is the length of an IPv6 address?
Which protocol is used to resolve an IP address to its corresponding MAC address?
Which protocol is used to resolve an IP address to its corresponding MAC address?
Which layer of the TCP/IP model does an IPv4 address belong to?
Which layer of the TCP/IP model does an IPv4 address belong to?
What type of addressing does the MAC broadcast address FF-FF-FF-FF-FF-FF apply to?
What type of addressing does the MAC broadcast address FF-FF-FF-FF-FF-FF apply to?
Flashcards
What do switches use to make forwarding decisions?
What do switches use to make forwarding decisions?
MAC addresses are used by switches to identify devices on a network and forward data accordingly.
What is the purpose of the FTP protocol?
What is the purpose of the FTP protocol?
The purpose of the FTP protocol is to transfer files between devices over a network.
What is the purpose of the CRC in data transmission?
What is the purpose of the CRC in data transmission?
The Cyclic Redundancy Check (CRC) is a method used to detect errors in data transmission. It calculates a checksum value based on the data sent and verifies the checksum at the receiving end.
What technology adds security to HTTP connections?
What technology adds security to HTTP connections?
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What happens to IP addresses in data headers when they pass through a router?
What happens to IP addresses in data headers when they pass through a router?
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How many bits are in an IPv6 address?
How many bits are in an IPv6 address?
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What are loopback addresses used for?
What are loopback addresses used for?
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What is the MAC broadcast address used for?
What is the MAC broadcast address used for?
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Study Notes
Network Concepts: Revision Questions
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(i) When transferring a 1KB file, more than 1KB of data is transferred due to overhead (e.g., headers, error checking).
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(ii) MAC addresses contain hexadecimal letters (0-9, A-F). A typical MAC address has 6 sets of 2 hexadecimal characters (e.g., 00:1B:44:00:E2:90).
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(iii) Network switches use MAC addresses for forwarding decisions.
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(iv) The File Transfer Protocol (FTP) enables transferring files between computers.
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(v) Cyclic Redundancy Checks (CRCs) are error detection mechanisms.
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(vi) The Secure Sockets Layer (SSL) enhances HTTP security, adding encryption.
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(vii) When data passes through a router, the source and destination IP addresses change.
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(viii) An IPv6 address has 128 bits.
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(ix) Loopback addresses (127.0.0.1 and ::1) are used for testing and communicating within the same machine.
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(x) The MAC broadcast address (FF-FF-FF-FF-FF-FF) is used for communicating with all devices on the network.
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(xi) Port numbers and sequence numbers reside in the Transport Layer of the OSI model.
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(xii) Port numbers and sequence numbers reside in the Transport Layer of the TCP/IP model.
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(xiii) IPv4 addresses are placed in the Network Layer of the OSI model.
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(xiv) IPv6 addresses are placed in the Internet Layer of the TCP/IP model.
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(xv) TCP windowing manages data transmission efficiency. Windowing controls the amount of data a sender can transmit before receiving an acknowledgement from the receiver. This prevents overwhelming the network or the receiver.
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(xvi) Sending data from one to some devices is called multicasting.
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(xvii) Multicasting uses a class D IPv4 address range.
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(xviii) Switches and routers operate in the Data Link and Network layers of the OSI model.
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(xix) CRC, FCS, and MD5 are hashing algorithms; they ensure the integrity of data by providing a checksum signature, used for error detection.
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(xx) Address Resolution Protocol (ARP) converts IP addresses to MAC addresses. It is crucial for mapping IP addresses to MAC addresses, allowing communication between devices on a network.
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