Computer Networking How often are BPDUs sent from a layer 2 device? Every 30 seconds Never Every 2 seconds Every 10 minutes Every 30 seconds Never Every 2 seconds Every 10 minutes ANSWER DOWNLOAD EXAMIANS APP
Computer Networking A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session? Restart the virtual circuit. Decrease the sequence number. Decrease the window size. Send a different source port number. Restart the virtual circuit. Decrease the sequence number. Decrease the window size. Send a different source port number. ANSWER DOWNLOAD EXAMIANS APP
Computer Networking What frequency range is used for microwave communications, satellite and radar? Low Frequency : 30 kHz to 300 kHz Super High Frequency : 3000 MHz to 30000 MHz Medium Frequency : 300 kHz to 3 MHz Extremely High Frequency :30,000 MHz None of these Low Frequency : 30 kHz to 300 kHz Super High Frequency : 3000 MHz to 30000 MHz Medium Frequency : 300 kHz to 3 MHz Extremely High Frequency :30,000 MHz None of these ANSWER DOWNLOAD EXAMIANS APP
Computer Networking A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent? None of these 128 Kbps. 64 Kbps 32 Kbps 8 Kbps None of these 128 Kbps. 64 Kbps 32 Kbps 8 Kbps ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following device is used with an X.25 network to provide service to asynchronous terminals gateway None of these bridges Packet assembler/disassemble repeater gateway None of these bridges Packet assembler/disassemble repeater ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Now-a-days computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose? None of these Modem Keyboard Fax Scanner None of these Modem Keyboard Fax Scanner ANSWER DOWNLOAD EXAMIANS APP
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