Computer Networking Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost. P I (K + 1) KIK (1 + F) None of these 1/ (1 - F) K I (K - P) P I (K + 1) KIK (1 + F) None of these 1/ (1 - F) K I (K - P) ANSWER DOWNLOAD EXAMIANS APP
Computer Networking The OCR reading unit attached to a POS terminal is called a cursor All of these None of these wand light pen cursor All of these None of these wand light pen ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the followings is used in communications is referred to as unshielded twisted-pair (UTP)? Coaxial cable Fiber-optic cable Twisted-pair cable None of these Coaxial cable Fiber-optic cable Twisted-pair cable None of these ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Start and stop bits are used in serial communication for Synchronization Slowing down the communication Error detection Error correction Synchronization Slowing down the communication Error detection Error correction ANSWER DOWNLOAD EXAMIANS APP
Computer Networking A characteristic of a multiprogramming system is: All listed here simultaneous execution of program instructions from two applications concurrent processing of two or more programs None of these multiple CPUs All listed here simultaneous execution of program instructions from two applications concurrent processing of two or more programs None of these multiple CPUs ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following device is used with an X.25 network to provide service to asynchronous terminals repeater Packet assembler/disassemble bridges gateway None of these repeater Packet assembler/disassemble bridges gateway None of these ANSWER DOWNLOAD EXAMIANS APP
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