COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK TOPOLOGIES AND PROTOCOLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -In connection-oriented packet switching, also called virtual circuit switching or circuit switching, data packets are first assembled and then numbered. They then travel across a predefined route, sequentially. Address information is not needed in circuit switching, because all packets are sent in sequence.
Detailed explanation-2: -A packet switched network (PSN) is a type of computer communications network that groups and sends data in the form of small packets. It enables the sending of data or network packets between a source and destination node over a network channel that is shared between multiple users and/or applications.
Detailed explanation-3: -The correct answer is option (2) Circuit switching has less variation in packets than packet switching. Circuit switching send packet in order, while packet switching send out of order, so reordering needs in packet switching.
Detailed explanation-4: -Packet switching is used in the Internet and most local area networks. The Internet is implemented by the Internet Protocol Suite using a variety of link layer technologies. For example, Ethernet and Frame Relay are common. Newer mobile phone technologies (e.g., GSM, LTE) also use packet switching.