Which two subnetworks would be included in the summarized address of 172.31.80.0 /20？ （）

A .  An ACL can be applied to multiple interlaces. B .  An ACL wildcard mask is identical to an IP subnet mask. C .  There may be multiple ACLs per protocol， per direction， and per interface. D .  There is an "implicit deny" at the end of an ACL and will result in a dropped packet. E .  An ACL acts on all packets， those flowing thru the router and those originated by the router itself. F .  An ACL will be processed from top to bottom and may have multiple matches that will act on the packet that is being tested.

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 . Database must be running in archivelog mode. B . Automatic undo management must be enabled. C . Undo retention guarantee must be enabled. D . The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).

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

A . 802.1X B . Cisco Temporal Key Integrity Protocol （CKIP） C . Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling （EAP-FAST） D . Cisco Message Integrity Check （CMIC） E . One-Time Passwords （OTP） F . Advanced Encryption Standard （AES）

A . TestKingA(config-if)# ip address 192.168.32.142 255.255.255.240 B . TestKingA(config-if)# ip address 192.168.32.143 255.255.255.240 C . TestKingA(config-if)# ip address 192.168.32.158 255.255.255.240 D . TestKingA(config-if)# ip address 192.168.32.145 255.255.255.240 E . TestKingA(config-if)# ip address 192.168.32.144 255.255.255.240

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 . 255.255.255.224 B . 255.255.255.248 C . 0.0.0.224 D . 0.0.0.8 E . 0.0.0.7 F . 0.0.0.3

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 . 172.31.17.4/30 B . 172.31.51.16/30 C . 172.31.64.0/18 D . 172.31.80.0/22 E . 172.31.92.0/22 F . 172.31.192.0/18

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 .  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 . 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 of deadlocking by inserting invocations of Thread.yield().

A . A finalizer may NOT be invoked explicitly. B . The finalize method declared in class Object takes no action. C . super.finalize（）is called implicitly by any over riding finalize method. D . The finalize method for a given objec twill be called no more than once by the garbage collector. E . The order in which finalize will be called on two objects is based on the order in which the two objects became finalizable.

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