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Which of the following statements are true?()
A . The equals() method determines if reference values refer to the same object.
B . The == operator determines if the contents and type of two separate objects match.
C . The equals() method returns true only when the contents of two objects match.
D . The class File overrides equals() to return true if the contents and type of two separate objects match.
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Which two statements about SCSI are true? ()
A . The bus is limited to 32 devices
B . It is a full duplex serial standard
C . It is a half-duplex serial standard
D . It allows up to 320 MB/s of shared channel bandwidth
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Which four statements about NetFlow are true?()
A . NetFlow records bidirectional IP traffic flow.
B . NetFlow export can be implemented over IPv4.
C . NetFlow export can be implemented over IPv6.
D . NetFlow records multicast IP traffic flow.
E . NetFlow records ingress traffic.
F . NetFlow records egress traffic.
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Which three statements are true about policing?()
A . Out-of-profile packets are queued.
B . It causes TCP retransmits.
C . Marking and remarking are not supported.
D . It does not respond to BECN and foresight messages.
E . It uses a single- and two-bucket mechanism for metering.
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Which two statements about zoning are correct? ()
A . Zoning increases security.
B . DNS queries are used for software zoning.
C . Software zoning is more secure than hardware zoning.
D . When using zones and VSANs together, the zone is created first.
E . Zoning requires that VSANs be established before it becomes operational.
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Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?()
A . REVOKE ALL PRIVILEGES FROM USER tom
B . REVOKE ALL ON EMPLOYEE FROM USER tom
C . REVOKE EXECUTE ON EMPLOYEE FROM USER tom
D . REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom
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Which statements are correct regarding indexes? ()
A . When a table is dropped, the corresponding indexes are automatically dropped.
B . For each DML operation performed, the corresponding indexes are automatically updated.
C . Indexes should be created on columns that are frequently referenced as part of an expression.
D . A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.
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Which four statements are true?()
A . Has-a relationships should never be encapsulated.
B . Has-a relationships should be implemented using inheritance.
C . Has-a relationships can be implemented using instance variables.
D . Is-a relationships can be implemented using the extends keyword.
E . Is-a relationships can be implemented using the implements keyword.
F . An array or a collection can be used to implement a one-to-many has-a relationship.
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Which statements are true regarding listeners()
A . Listeners use only the TCP/IP protocol.
B . Multiple listener processes can run simultaneously on a host.
C . Multiple database instances can be registered with a single listener.
D . The listener-related errors can be traced only at the administrative level.
E . Only one database instance can be registered with a single listener at any time
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Which three statements are true?()
A . A final method in class X can be abstract if and only if X is abstract.
B . A protected method in class X can be overridden by any subclass of X.
C . A private static method can be called only within other static methods in class X.
D . A non-static public final method in class X can be overridden in any subclass of X.
E . A public static method in class X can be called by a subclass of X without explicitly referencing the class X.
F . A method with the same signature as a private final method in class X can be implemented in a subclass of X.
G . A protected method in class X can be overridden by a subclass of X only if the subclass is in the same package as X.
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Which two statements are true?()
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().
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Which three statements are true?()
A . The default constructor initializes method variables.
B . The default constructor has the same access as its class.
C . The default constructor invoked the no-arg constructor of the superclass.
D . If a class lacks a no-arg constructor, the compiler always creates a default constructor.
E . The compiler creates a default constructor only when there are no other constructors for the class.
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Which are DML statements? ()
A . COMMIT
B . MERGE
C . UPDATE
D . DELETE
E . CREATE
F . DROP
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Which method could be utilized to identify both DML operations and the SQL statements needed to undo those operations for a specific schema owner?()https://assets.asklib.com/images/image2/2018080209424522740.jpg
A . A
B . B
C . C
D . D
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ENCRYPT_TS is an encrypted tablespace that contains tables with data. Which statement is true regarding the effect of queries and data manipulation language (DML) statements on the encrypted data in the tables?()
A . The data is decrypted during SORT and JOIN operations.
B . The data remains encrypted when it is read into memory.
C . The data remains encrypted when it is stored in the redo logs.
D . The data remains encrypted in the UNDO tablespace provided that the UNDO tablespace was created with the encryption option enabled.
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Which statements about inheritance are true?()
A . In Java programming language only allows single inheritance.
B . In Java programming language allows a class to implement only one interface.
C . In Java programming language a class cannot extend a class and implement a interface together.
D . In Java programming language single inheritance makes code more reliable.
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Which statements are true about checkpointing()
A . The checkpoint frequency decreases with the smaller redo log file size.
B . It ensures that all committed data is written to the data files during normal shutdown.
C . The frequent full checkpoint in a database can cause the overall degradation of the database performance.
D . It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the onlineredo log file
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Which two statements are true?()
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().
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Which three MPLS statements are true?()
A . Cisco Express Forwarding (CEF) must be enabled as a prerequisite to running MPLS on a Cisco router.
B . Frame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.
C . MPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay, but is not supported by ATM because of ATM fixed-length cells.
D . OSPF, EIGRP, IS-IS, RIP, and BGP can be used in the control plane.
E . The control plane is responsible for forwarding packets.
F . The two major components of MPLS include the control plane and the data plane.
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Which statements are true concerning NAT? ()
A . NAT provides 1 to manyaddress mapping.
B . NAT provides 1 to 1 address mapping.
C . NAT is only useful forTCP/UDP and ICMP traffic.
D . NAT can be used for all IP traffic.
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Which two of statements are true?()
A . It is possible to synchronize static methods.
B . When a thread has yielded as a result of yield(), it releases its locks.
C . When a thread is sleeping as a result of sleep(), it releases its locks.
D . The Object.wait() method can be invoked only from a synchronized context.
E . The Thread.sleep() method can be invoked only from a synchronized context.
F . When the thread scheduler receives a notify() request, and notifies a thread, that thread immediately releases its lock.
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Read the following statements. Judge which statements are true and which statements are false.1 Confucius took non-action as the principal doctrine.
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which are DML statements(choose all that apply)()。
A.merge
B.update
C.delete
D.commit