1z0-062

1z0-062 practice questions, page 2 of 16, with answer review and explanations.

Question 6

Which two statements are true about the logical storage structure of an Oracle database? (Choose two.)

  1. An extent contains data blocks that are always physically contiguous on disk.
  2. An extent can span multiple segments.
  3. Each data block always corresponds to one operating system block.
  4. It is possible to have tablespaces of different block sizes.
  5. A data block is the smallest unit of I/O in data files.

Question 7

Which two statements correctly describe the relationship between data files and logical database structures? (Choose two.)

  1. A segment cannot span data files.
  2. A data file can belong to only one tablespace.
  3. An extent cannot span data files.
  4. The size of an Oracle data block in a data file should be the same as the size of an OS block.

Question 8

Which statement is true about the Log Writer process?

  1. It writes when it receives a signal from the checkpoint process (CKPT).
  2. It writes concurrently to all members of multiplexed redo log groups.
  3. It writes after the Database Writer process writes dirty buffers to disk.
  4. It writes when a user commits a transaction.

Question 9

The ORCL database is configured to support shared server mode. You want to ensure that a user connecting remotely to the database instance has a one-to-one ratio between client and server processes. Which connection method guarantees that this requirement is met?

  1. connecting by using an external naming method
  2. connecting by using the easy connect method
  3. creating a service in the database by using the dbms_service.create_service procedure and using this service for creating a local naming service
  4. connecting by using the local naming method with the server = dedicated parameter set in the tnsnames.ora file for the net service
  5. connecting by using a directory naming method

Question 10

Which two tasks can be performed on an external table? (Choose two.)

  1. partitioning the table
  2. creating an invisible index
  3. updating the table by using an update statement
  4. creating a public synonym
  5. creating a view