Signaling devices required on inflatable liferafts include a(n) ().
A、Very pistol
B、orange smoke signal
C、air horn
D、lantern
A、Very pistol
B、orange smoke signal
C、air horn
D、lantern
A、A. Establishing a signaling channel between two signaling entities in an ATM network B、B. Provide reliable connection for signaling between two IP signaling nodes C、C. Provide routing for IP signaling messages in an IP signaling network
A、A.All CE devices emulate a bridge B、B.All provider devices emulate a bridge C、C.Hierarchical VPLS reduces signaling overhead D、D.Each PE device emulates a bridge E、E.Each CE device emulates a bridge
A、Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit B、The device with the lowest MAC address is permitted to retrannsmit first C、The device with the lowest MAC address sends a jam signal to notify all other devices of the collision D、Both devices send a jam signal to notify all other devices of the collision
A、Both devices stop transmitting, wait a random period of time, verify the wire is idle, and re- transmit. B、The device with the lowest MAC address is permitted to retransmit first. C、The device with the lowest MAC address sends a jam signal to notify all other devices of the collision. D、Both devices send a jam signal to notify all other devices of the collision.
A、Both devices stop transmitting, wait a random period of time, verify the wire is idle, and re- transmit. B、The device with the lowest MAC address is permitted to retransmit first. C、The device with the lowest MAC address sends a jam signal to notify all other devices of the collision. D、Both devices send a jam signal to notify all other devices of the collision.
A、Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit B、The device with the lowest MAC address is permitted to retrannsmit first C、The device with the lowest MAC address sends a jam signal to notify all other devices of the collision D、Both devices send a jam signal to notify all other devices of the collision
A、A. Channel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream. B、B. Channel-associated signaling utilizes a separate TDM channel for transmitting control signals. C、C. Common channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream. D、D. Common channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice. E、E. ISDN BRIs implement channel-associated signaling.
A、VPLS uses LDP for signaling. B、VPLS uses BGP for autodiscovery and signaling. C、VPLS uses extended IS-IS for signaling D、VPLS uses OSPF version 3 for auto discovery and signaling E、VPLS uses spanning tree for signaling