Cisco Certified Technician questions with correct answers

ATM (Asynchronous Transfer Mode) - Answer The international standard for cell relay in which multiple service types (such as voice, video, or data) are conveyed in fixed-length (53-byte) cells. Fixed-length cells allow cell processing to occur in hardware, thereby reducing transit delays. ATM is designed to take advantage of high-speed transmission media, such as E3, SONET, and T3. Bandwidth - Answer The difference between the highest and lowest frequencies available for network signals. The term also is used to describe the rated throughput capacity of a given network medium or protocol. The frequency range necessary to convey a signal measured in units of hertz (Hz). For example, voice signals typically require approximately 7 kHz of bandwidth and data traffic typically requires approximately 50 kHz of bandwidth. BRI (basic rate interface) - Answer Basic Rate Interface. ISDN interface composed of two B channels and one D channel for circuit-switched communication of voice, video, and data. Broadcast - Answer Data packet that are sent to all nodes on a network. Broadcasts are identified by a broadcast address. CD (carrier detect) - Answer A signal that indicates whether an interface is active. Also, a signal generated by a modem indicating that a call has been connected. CDP (Cisco discovery protocol) - Answer Media- and protocol-independent device-discovery protocol that runs on all Cisco-manufactured equipment, including routers, access servers, bridges, and switches