Which two differentiators make RSTP the preferred protocol for preventing Layer 2 loops in a switchednetwork environment?（） (Choose two.)

A . PowerVM offers partition mobility. B . PowerVM can virtualize network and SAN resources. C . PowerVM supports multiple operating systems running concurrently. D . PowerVM allows an LPAR to use activated cores and memory without limitation.

A . The source and target platforms must be the same B . Redo logs, control files and temp files are also transported C . The transported database must have the same database identifier (DBID) as the source database and cannot be changed D . The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported E . Recovery Manager (RMAN) is used to convert the necessary data files of the database if the target platform is different and has different endian format

A . The transparent encryption of backups uses the encryption wallet B . The database uses the same encryption key for every encrypted backup C . The password encryption of backups only uses the password while creating and restoring backup D . If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backups.

A .  16>4 B .  16/2 C .  16*4 D .  16>>2 E .  16/2^2 F .  16>>>2

A .  3/2 B .  3<2 C .  3*4 D .  3<<2 E .  3*2^2 F .  3<<<2

A .  3/2 B .  3<2 C .  3*4 D .  3<<2 E .  3*2^2 F .  3<<<2

A . Hot-plug PCI-X B . Remote I/O expansion C . Maximum 64GB RAM for 8-way D . Onboard SCSI RAID controller E . Ability to expand up to 16-way SMP

A . the temperature B . the viscosity C . the gravity D . the size

A .  Voice traffic is affected more by link speed than FTP traffic is. B .  Voice traffic is affected more by packet delays than FTP traffic is. C .  Voice streams involve larger packet sizes than most TCP network traffic involves. D .  Voice traffic is more sensitive to packet loss than TCP network traffic is. E .  Voice traffic requires QOS mechanisms only in heavily loaded network segments.

A . It is possible for more than two threads to deadlock at once. B . The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state. C . Deadlocked threads release once their sleep（） method’s sleep duration has expired. D . Deadlocking can occur only when the wait（）， notify（）， and notifyAll（） methods are used incorrectly. E . It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly. F . If a piece of code is capable of deadlocking， you cannot eliminate the possibility ofdeadlocking by insertinginvocations of Thread.yield（）.

A .  16 > 4 B .  16 / 2 C .  16 * 4 D .  16 >> 2 E .  16 / 22 F .  16 >>> 2

A .  Dense mode multicast requires explicit join messages from their members. B .  Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the  unwanted traffic. C .  Sparse mode multicast uses a pull model to send multicast traffic to where it is requested.   D .  Sparse mode uses reverse path forwarding （RPF） to prune off redundant flows. E .  The primary use of sparse mode multicast is for test labs and router performance testing.

A . menu B . functions C . data group D . responsibility E . functional grou

A . Common-rail injection B . Air injection C . Jerk pump injection D . Distribution injectio

A .  An encapsulated， public class promotes re-use. B .  Classes that share the same interface are always tightly encapsulated. C .  An encapsulated class allows subclasses to overload methods， but does NOT allow overriding methods. D .  An encapsulated class allows a programmer to change an implementation without affecting outside code.

A . DPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings. B . DPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber. C . In DPT/RPR rings， data packets can be sent in one direction （downstream） and the corresponding control packets in the opposite direction （upstream），thus using both fibres concurrently to maximise bandwidth. D . DPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used tomake best use of the Bandwidth.

A . The backup performed on Sundays contains all the blocks that have ever been used in the database. B . The backup performed on Sundays contains all the blocks that have changed since the last level 1backup.  C . The backup performed on each working day contains all the blocks that have changed since the lastlevel 0 backup. D . The backup performed on Monday contains all the blocks that have changed since the level 0 backup，and every other working day contains all the blocks that have changed since the level 1 backup.

A . The backup performed on Sundays contains all the blocks that have ever been used in the database. B . The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup. C . The backup performed on each working day contains all the blocks that have changed since the last level 0 backup. D . The backup performed on Monday contains all the blocks that have changed since the level 0 backup， and every other working day contains all the blocks that have changed since the level 1 backu

A . A job chain can contain a nested chain of jobs. B . The jobs in a job chain cannot have more than one dependency. C . A job of the CHAIN type can be run using event-based or time-based schedules. D . The jobs in a job chain can be executed only by using the events generated by the Scheduler

A．Regional ileitis B．Ureteric coli C．Perforated peptic ulcer D．Acute pancreatitis E．Mesenteric cyst