Dear candidates you will find MCQ questions of Computer Architecture and Organization here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: a short vc number also called as vcid (virtual circuit identifier) is a type of identifier which is used to distinguish between several virtual circuits in a connection oriented circuit switched network. each virtual circuit is used to transfer data over a larger packet switched network.
Explanation: spanning tree protocol (stp) is a network protocol that creates a loop free logical topology for ethernet networks. it is a layer 2 protocol that runs on bridges and switches. the main purpose of stp is to ensure that you do not create loops when you have redundant paths in your network.
Explanation: keystroke & other input logging is an example of physical layer vulnerability. other such physical layer vulnerabilities are unauthorized network access, damage or destruction of data & hardware and keystroke & other input logging.
Explanation: vlan circumvention is an example of data-link layer vulnerability. mac address spoofing, as well as switches, may be forced for flooding traffic to all vlan ports are some other examples of data-link layer vulnerability.
Explanation: the portion of physical layer that interfaces with the medium access control sublayer is physical signaling sublayer. the main function of this layer is character encoding, reception, decoding and performs optional isolation functions. it
Explanation: in asynchronous serial communication, the communication is not synchronized by clock signal. instead of a start and stop signaling and flow control method is followed. unlike asynchronous serial communication, in synchronous serial communication a clock signal is used for communication, so the start and stop method is not really required.
Explanation: media access control (mac) deals with transmission of data packets to and from the network-interface card, and also to and from another remotely shared channel.
Explanation: when a single bit error occurs in a data, it is called single bit error. when more than a single bit of data is corrupted or has error, it is called burst error. if a single bit error occurs, the bit can be simply repaired by inverting it, but in case of a burst error, the sender has to send the frame again.
Explanation: the logical link control is a sublayer of data link layer whose main function is to manage traffic, flow and error control. the automatic repeat request error management mechanism is provided by the llc when an error is found in the received frame at the receiver’s end to inform the sender to re-send the frame.
Explanation: a computer network is defined as a collection of interconnected computers which uses a single technology for connection.
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