Which of the processes listed consumes the greatest amount of power while producing the greatest amount of heat?（）

A . Chemical energy B . Mechanical energy C . Thermal energy D . Electrical energy

A . Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement. B . Addresses are permanently assigned so that the hosts uses the same address at all times. C . Addresses are assigned for a fixed period of time, at the end of the period, a new request for an address must be made. D . Addresses are leased to hosts, which periodically contact the DHCP server to renew the lease.

A . Only one I/O calibration process can run at a time. B . It automates the resource allocation for the Automated Maintenance Tasks. C . It improves the performance of the performance-critical sessions while running. D . It can be used to estimate the maximum number of I/Os and maximum latency time for the system. E . The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE.

A . The transport layer divides a data stream into segments and may add reliability and flow control information. B . The data link layer adds physical source and destination addresses and an FCS to the segment. C . Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information. D . Packets are created when the network layer adds Layer 3 addresses and control information to a segment. E . The presentation layer translates bits into voltages for transmission across the physical link.

A . Let the metrics default. B . Set the metric components using the redistri bute command's metric keyword. C . Set the metric components using the default - metric router subcommand. D . Set the integer (composite) metric using the redistribute command's metric keyword.

A .  It creates jobs without considering the priorities associated with them. B .  It translates tasks into jobs for execution by the scheduler. C .  It determines the list of jobs that must be created for each maintenance window. D .  It is spawned by the MMON background process at the start of the maintenance window. E .  It maintains a repository in the SYSTEM tablespace to store the history of the execution of all tasks.

A .  Only one I/O calibration process can run at a time B .  It automates the resource allocation for the Automated Maintenance Tasks C .  It improves the performance of the performance-critical sessions while running D .  It can be used to estimate the maximum number of I/Os and maximum latency time for the system E .  The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE

A . It is possible to have multiple database writers in an Oracle instance. B . It writes dirty buffers， if any， to data files whenever a checkpoint occurs. C . It writes dirty buffers， if any， to data files whenever a transaction commits. D . It writes dirty buffers， if any， to data files before the log writer （LGWR） writes.

A . CEF switching is disabled on the switch B . The source device and destination device are in different VLANs C . The VLAN is excluded from the trunk D . The host is connected to the switch through an IP phone E . A faulty cable from host to switch or between switches F . The trunking encapsulation type is inconsistent on the two ends of the link

A . Completed， Deposited， Released， Shipped B . Completed， Released， Shipped， Deposited C . Deposited， Released， Shipped， Completed D . Released， Shipped， Completed， Deposited E . Released， Shipped， Deposited， Completed

A . The error daemon runs in the foreground and reads the /etc/errpt file.  B . The error daemon is invoked by the user when required and it reads the /usr/lib/errpt.  C . The error daemon is invoked whenever the error occurs and it reads the /usr/lib/errpt.  D . The error daemon /usr/lib/errdemon runs in the background on most machines and reads the /dev/error special file.

A . It is possible to have multiple database writers in an Oracle instance. B . It writes dirty buffers， if any， to data files whenever a checkpoint occurs. C . It writes dirty buffers， if any， to data files whenever a transaction commits. D . It writes dirty buffers， if any， to data files before the log writer （LGWR） write

A . Let the metrics default. B . Use each redistributed route's OSPF metric using the redistribute command's metric transparent keywords. C . Set the metric using the default - metric router subcommand. D . Redistribution is not allowed between two OSPF p rocesses.

A . Initiation B . Scope planning C . Scope Definition D . Scope change control E . Scope verification

A．Interrupt B．Scheduler C．Working Set D．Swapping

A．A.configuration of static MAC B．B.configuration of permanent ARP C．C.IP interface D．D.VLAN interface

A．It was developed in competition with wax-cyclinder recording technology. B．It has resulted in the first distortion-free playback system. C．It has been extensively applied to nonmusical sounds. D．It cannot yet process music originally recorded on analog equipment. E．It is not yet capalbe of reprocessing old recordings in a completely distortion-free manner.

A、Summarizing requires attentions to the details at the very beginning. B、Summarizing does not omit any detail in the original text. C、Summarizing takes several steps including reading the text first. D、Summarizing often contains long quotations from the original text.

A．encoding B．storage C．retrieval D．note-taking