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What statements are true regarding ICMP packets?（）
- A、They acknowledge receipt of TCP segments.
- B、They guarantee datagram delivery.
- C、They can provide hosts with information about network problems.
- D、They are encapsulated within IP datagrams.
- E、They are encapsulated within UDP datagrams.
参考答案
更多 “What statements are true regarding ICMP packets?（）A、They acknowledge receipt of TCP segments.B、They guarantee datagram delivery.C、They can provide hosts with information about network problems.D、They are encapsulated within IP datagrams.E、They are encapsulated within UDP datagrams.” 相关考题
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听力原文：M: There are several reasons why careful analysis of financial statements is necessary. What are they?W: First, financial statements are general-purpose statements. Secondly, the relationships between amounts on successive financial statements are not obvious without analysis. And thirdly, users of financial statements may be interested in seeing how well a company is performing.Q: What are they talking about?(17)A．The methods of financial statements.B．The necessity of careful analysis of financial statementsC．The relationship among financial statements.D．The purpose of financial statements.
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Evaluate these two SQL statements:What is true about them?()
A. The two statements produce identical results.B. The second statement returns a syntax error.C. There is no need to specify DESC because the results are sorted in descending order by default.D. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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______ you said is true, there are still other factors to be considered.A．Supposed that what
B．Supposing what that
C．Granted that what
D．Considered what that
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Which of the following statements is true regarding the VERSIONS BETWEEN clause？（） A、 The VERSIONS BETWEEN clause may be used in DML statements.B、 The VERSIONS BETWEEN clause may be used in DDL statements.C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
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Which statement is true regarding the INTERSECT operator?（）A、It ignores NULL values B、Reversing the order of the intersected tables alters the result C、The names of columns in all SELECT statements must be identical D、The number of columns and data types must be identical for all SELECT statements in the query
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What three statements are true about the various deployments of the 802.1x Extensible Authentication Protocol （EAP）？ （）A、 EAP-FAST has the ability to tie login with non-Microsoft user databasesB、 EAP-TLS supports static passwordsC、 PEAP supports one-time passwordsD、 LEAP does not support multiple operating systemsE、 LEAP supports Layer 3 roamingF、 PEAP does not work with WPA·
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You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（） A、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.B、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.C、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.D、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
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Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A、The two statements produce identical results.B、The second statement returns a syntax error.C、There is no need to specify DESC because the results are sorted in descending order by default.D、The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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多选题If p and q are primes greater than 2, which of the following statements must be true? (Indicate all such statements.)Ap + q is evenBpq is oddCp2-q2 is even
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多选题Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)Ac=dBl and k are parallelCm and l are perpendicular
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多选题Which of the following statements are true? (Indicate all such statements.)Aτ(5) =τ(7)Bτ(5) τ(7) =τ(35)Cτ(5) + τ(7) =τ(12)
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单选题Which statement is true when you run the SQL Tuning Advisor with limited scope？（）A
Access path analysis is not performed for the SQL statements.B
SQL structure analysis is not performed for the SQL statements.C
SQL Profile recommendations are not generated for the SQL statements.D
The staleness and absence of the statistics are not checked for the objects in the query supplied to the SQL Tuning Advisor.
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单选题Which of the following statements is true according to what was said in the recording?A
The dollar rose to a new high against the curd.B
The American economy has rebounded.C
Japan’s economy has not bottomed out yet.D
The performance of many economies in Latin America is less than expected.
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单选题Which of the following statements is true according to what you hear?A
Prices for houses in big cities have started to rise since this year.B
People buy and sell houses to improve their living conditions.C
Economists believe that residence prices would drop.D
Economists warn people that price rise might slow down.
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单选题______ you said is true, there are still other factors to be considered .A
Supposed that whatB
Supposing what thatC
Granted that whatD
Considered what that
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多选题What statements are true regarding ICMP packets?（）AThey acknowledge receipt of TCP segments.BThey guarantee datagram delivery.CThey can provide hosts with information about network problems.DThey are encapsulated within IP datagrams.EThey are encapsulated within UDP datagrams.
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多选题What two statements are true about Oracle Enterprise Manager’s Java Diagnostic tool， which makes the tool suitable for production server diagnostics ？（）Avirtually zero overhead for application running in the JVMBno stalling of running JVM when taking a heap dump for memory analysisCno need of modification， changes， or instrumentation of the application since is uses Network Protocol Analysis （NPA technology）Dprovides Byte Code Instrumentation for Java
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单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEESORDER BY 2 DESC; What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
考题
多选题What three statements are true about the various deployments of the 802.1x Extensible Authentication Protocol （EAP）？ （）AEAP-FAST has the ability to tie login with non-Microsoft user databasesBEAP-TLS supports static passwordsCPEAP supports one-time passwordsDLEAP does not support multiple operating systemsELEAP supports Layer 3 roamingFPEAP does not work with WPA·
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单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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多选题Which three statements about subqueries are true? （）AAsinglerowsubquerycanretrieveonlyonecolumnandonerow.BAsinglerowsubquerycanretrieveonlyonerowbutmanycolumns.CAmultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.DAmultiplerowsubquerycanbecomparedusingthe；；；operator.EAsinglerowsubquerycanusetheINoperator.FAmultiplerowsubquerycanusethe；=；operator.
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单选题What is true about sequences? （）A
Once created, a sequence belongs to a specific schema.B
Once created, a sequence is linked to a specific table.C
Once created, a sequence is automatically available to all users.D
Only the DBA can control which sequence is used by a certain table.E
Once created, a sequence is automatically used in all INSERT and UPDATE statements.
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单选题Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）A
The VERSIONS BETWEEN clause may be used in DML statements.B
The VERSIONS BETWEEN clause may be used in DDL statements.C
The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D
The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
考题
单选题You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（）A
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.B
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.C
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.D
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
考题
单选题Evaluate these two SQL statements: What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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