12. What is channel? Underline the key words that you think are very important.

A . Packets are distributed across the ports in the channel based on both the source and destination MAC addresses. B . Packets are distributed across the ports in the channel based on both the source and destination IP addresses. C . Packets are balanced across the ports in the channel based first on the source MAC address， then on the destination MAC address， then on the IP address. D . Packets are distributed across the access ports in the channel based first on the source IP address and then the destination IP addresses.

A . hold your course and speed B . sound the danger signal C . begin an exchange of passing signals D . do not cross the channel if you might impede the other vessel

A . drop and re-create the WebSphere Commerce Payments database. B . stop and start the Payment Engine. C . configure WebSphere Commerce Server communication with WebSphere Commerce Payments Server. D . specify what type of Database software will be used for the WebSphere Commerce Payments database.

A . The new router will become active immediately because it’s the newest router introduced intothe group B . The new router can become active only when the existing active router and the existing standbyrouter become unavailable C . The new router has a lower priority value D . The new router will never become active unless the existing active router becomes unavailable E . The new router has preempt configured and a higher priority F . The new router has a higher priority value

A . the port-channel 1 interface B . the highest number member interface C . all member interfaces D . the lowest number member interface

A . Channel failover B . Restartable backups  C . Rescheduable backups  D . Automatic backup recovery  E . Channel recovery

A .  An interface ’san-port-channel’ in NXOS B .  An interface ’port-channel’ in NXOS C .  An interface ’port-channel’ with ’mode fc’ configured D .  An interface ’fc-port-channel’ in NXOS

A .  the DCC-E B .  the DCC-M C .  the DCC-R D .  the Line DCC E .  the Section DCC

A . Under any condition B . If the grounding lasts over 24 hours C . If it creates a hazard to the environment D . At the owner's discretio

A . Under any condition B . If the grounding lasts over 24 hours C . If it creates a hazard to the environment D . At the owner's discretio

A . any appropriate channel except public communication B . any appropriate channel except for public communications C . any appropriate channel besides public communication D . any appropriate channel beside public communicatio

A . 19 dBm B . 7 dBm C . 10 dBm D . 6 dBm E . 5 dbm to 10 dBm

A .  Because Banks are still connecting via dial-up. B .  Because Banks need to save cost. C .  Because Banks find themselves with an obsolete branch infrastructure. D .  Many banks need back-office process streamlining.

A . dirty delivery ducts B . too much refrigerant C . the fouling filters D . high temperature outside

A .  The tag is invoked without a body. B .  The doTAb method throws an exception. C .  The

A . The vessel is not capable of performing all required distress and safety functions B . The vessel is carrying more than the required number of qualified GMDSS radio operators C . The vessel has a temporary waiver of its radio license and Safety Certificate D . The vessel is not carrying a GMDSS radio maintainer，but has provided for shoreside maintenance plus duplication of equipment if required

A .  Products and Solutions B .  Ordering C .  Technical Support and Documentation D .  Partner Central

A . Water pockets B . A keel C . Strikes D . Sea anchor

A . Group flashing B . Composite group flashing C . Interrupted quick flashing D . Fixed and flashing

A . Hull B . Cargo C . Protection and Indemnity D . Pollutio

"Negotiation" means the ______ by the nominated bank of draft and/or documents under a complying presentation by ______ funds to the beneficiary. The undertaking of the issuing bank under negotiation credit is that upon it ascertaining that documents complies with the terms and conditions of credit, it will ______ in accordance with the instructions of the negotiating bank.

A．Always referring to RAM． B．Always following the opinion of the majority． C．Always striving for an optimal outcome at the cost of least damag E． D．Always referring to the plan rehearsed beforehanD．

According to Shannon's equation, what is the channel capacity of an analog voice-grade phone line with a bandwidth of 3100 Hz and a signal-to-noise ratio or 30 dB？ A．9.1 Kbps B．9.3 Kbps C．30.9 Kbps D．30.17 Kbps