CMSC 137- Transport Layer

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0 [{"id":625163,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:35:53","updated_at":"2018-11-24 07:03:54","questionName":"TCP is a reliable transport protocol.\r\nIt uses an acknowledgment mechanism to check the safe and sound arrival of data.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":11,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625161,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:35:06","updated_at":"2018-11-24 07:03:54","questionName":"When a process at site A wants to send and receive data from another process at site B, the following occurs:\r\n__________(3)","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":9,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625162,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:35:41","updated_at":"2018-11-24 07:03:54","questionName":"3 kinds of TCP Services","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":10,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625157,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:32:40","updated_at":"2018-11-24 07:03:54","questionName":"Because the sending and the receiving processes may not write or read data at the same speed, TCP needs buffers for storage.\r\nThere are two buffers, the sending buffer and the receiving buffer, one for each direction.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":5,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625164,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:36:46","updated_at":"2018-11-24 07:03:54","questionName":"6 TCP features","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":12,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625153,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:30:51","updated_at":"2018-11-24 07:03:54","questionName":"what?\r\neach user datagram sent by UDP is an independent datagram.\r\nThere is no relationship between the different user datagrams even if they are coming from the same source process and going to the same destination program.\r\neach user datagram can travel on a different path.\r\nthe process that uses UDP cannot send a stream of data to UDP and expect UDP to chop them into different related user datagrams. Instead each request must be small enough to fit into one user datagram.\r\nOnly those processes sending short messages should use UDP.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":1,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625160,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:34:42","updated_at":"2018-11-24 07:03:54","questionName":"what?\r\nTCP, unlike UDP, is a connection-oriented protocol.\r\nWhen a process at site A wants to send and receive data from another process at site B, the following occurs:\r\nThe two TCPs establish a connection between them.\r\nData are exchanged in both directions.\r\nThe connection is terminated.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":8,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625165,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:36:59","updated_at":"2018-11-24 07:03:54","questionName":"TCP, unlike UDP, takes into account congestion in the network.\r\nThe amount of data sent by a sender is not only controlled by the receiver (flow control), but is also determined by the level of congestion in the network.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":13,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625158,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:32:54","updated_at":"2018-11-24 07:03:54","questionName":"The IP layer, as a service provider for TCP, needs to send data in packets, not as a stream of bytes.\r\nAt the transport layer, TCP groups a number of bytes together into a packet called a segment.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":6,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625159,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:34:01","updated_at":"2018-11-24 07:03:54","questionName":"what?\r\nTCP offers full-duplex service, in which data can flow in both directions at the same time.\r\nEach TCP then has a sending and receiving buffer, and segments move in both directions.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":7,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625155,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:32:10","updated_at":"2018-11-24 07:03:54","questionName":"provides process-to-process communication using port numbers.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":3,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625156,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:32:26","updated_at":"2018-11-24 07:03:54","questionName":"allows the sending process to deliver data as a stream of bytes and allows the receiving process to obtain data as a stream of bytes.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":4,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625152,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:30:17","updated_at":"2018-11-24 07:03:54","questionName":"what?\r\nThere is no flow control and hence no window mechanism. The receiver may overflow with incoming messages.\r\nThere is no error control mechanism in UDP except for the checksum*. This means that the sender does not know if a message has been lost or duplicated.\r\n* sequence of numbers and letters used to check data for errors\r\nWhen the receiver detects an error through the checksum, the user datagram is silently discarded.\r\nThe lack of flow control and error control means that the process using UDP should provide these mechanisms.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":0,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625154,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:31:52","updated_at":"2018-11-24 07:03:54","questionName":"____ is a connection-oriented protocol; it creates a virtual connection between two TCPs to send data. In addition, TCP uses _________ mechanisms at the transport level.\r\n","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":2,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":625166,"quiz_id":"30655","answer_id":null,"answerType_id":"4","created_at":"2018-11-24 06:37:12","updated_at":"2018-11-24 07:03:54","questionName":"To provide reliable service, TCP implements an error control mechanism.\r\nAlthough error control considers a segment as the unit of data for error detection (loss or corrupted segments), error control is byte-oriented\r\n","questionTimeSeconds":"0","questionTimeMinutes":"3","questionImagePath":null,"position":14,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null}]
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TCP is a reliable transport protocol. It uses an acknowledgment mechanism to check the safe and sound arrival of data.

Reliable Service





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