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Which of the following layers in an Open System Interconnection (OSI) model adds a header in front of the payload
Computer A started a communication sequence with Computer B that has a sequencing number of 300070. Computer B accepted the request and sent an acknowledgment number of 300071. Until this point, no payload has been exchanged. So far, the sequence numbers have increased by exactly 1 in each acknowledgment. Now, Computer A sends a payload data that is 800 bits long. According to you, what will be the acknowledgment number for the return message in this case.
You have been recently appointed by Jaylabs Internet Solutions to verify the TCP/IP protocols that have been set up at Heroku Industries for interorganizational purposes. On examining the TCP header segment, you want to get a sense of the limit of the maximum bytes of data that a computer can receive before returning an acknowledgment. Which of the following fields in a TCP segment should you check in such a situation?
While analyzing an intermittent error, James, an independent contractor for HKV Infrastructures, finds that the destination host is constantly asking the source to retransmit the data. He finds that the bug might be related to the transport layer of the OSI model. Since the TCP provides reliable delivery protocols, analyze which of the following characteristics of the TCP protocol James should check to fix this error.
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Hilary has been working on a pilot project for a start-up on which she has been testing the maximum bytes for the length of an IP packet. As her intended IP packets are larger than what the network allows, she has to break them up into smaller packets for transmission. Analyze and suggest which of the following fields Hilary should use in an IPv4 packet so that the receiving host is able to identify and reassemble the fragmented messages.
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Which of the following remote access methods allows a remote client to take over and command a host computer?
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Which of the following would you use to provide a set of rules for encryption, authentication, and key management for TCP/IP transmissions?
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Which of the following fields in a TCP segment confirms receipt of data via return message to the sender?
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The State of Nevada has organized a gaming championship for which you have been contracted to set up the network connection. The championship is a seven-day long affair with a heavy influx of participants. Which of the following protocols would you choose in setting up such a network?
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You have just managed to send a fragmented IP packet across a network as the IP packets are larger than what the network allows. Which of the following bits in the flags section of an IPv4 field will you apply so that you can send a clear message across to the receiving host that there are more fragments on the way?
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Study Notes
OSI Model and TCP/IP
- The transport layer in the OSI model adds a header in front of the payload.
- The sequence numbers in the TCP protocol increase by exactly 1 in each acknowledgment.
TCP/IP and Sequence Numbers
- When Computer A sends a payload data of 800 bits, the acknowledgment number for the return message will be the sequence number plus the payload size (300071 + 800).
TCP Header and Maximum Bytes
- The field to check in the TCP segment to determine the maximum bytes of data a computer can receive before returning an acknowledgment is the Window field.
TCP Characteristics and Error Fixing
- To fix the intermittent error of retransmitting data, James should check the TCP protocol's characteristic of retransmission.
IP Packet Fragmentation
- Hilary should use the Identification field in an IPv4 packet to identify and reassemble fragmented messages.
Remote Access Methods
- The remote access method that allows a remote client to take over and command a host computer is Remote Desktop.
Encryption and Key Management
- The set of rules for encryption, authentication, and key management for TCP/IP transmissions is provided by IPSec.
TCP Segment Acknowledgment
- The field in the TCP segment that confirms receipt of data via return message to the sender is the Acknowledgment field.
Network Connection Protocol
- The protocol to choose for setting up a network connection for a seven-day long gaming championship is DHCP.
IPv4 Fragmentation Flags
- The bit in the flags section of an IPv4 field to apply to send a clear message to the receiving host that there are more fragments on the way is the More Fragments (MF) flag.
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