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eQuiz - Multiple choice test on JDBC - Part 1

  1. Question 1: Which of the following is true regarding use of the JDBC-ODBC bridge with the applets?
    1. Sử dụng của JDBC-ODBC bridge từ chưa được bỏ qua applet đang chạy trong a browser, như Netscape Navigator, isn't allowed.
    2. Không thể sử dụng JDBC-ODBC bridge với ứng dụng sẽ sẽ chạy trong appletviewer since appletviewer assumes that applets are trusted.
    3. Pure Java JDBC drivers work well with applets. They are fully downloadable and do not require any client-side configuration.
    4. All of the above.
  2. Question 2: Which of the following is không phải chế độ phân vùng trong JDBC?
    1. TRANSACTION_READ_UNCOMMITTEDB
    2. TRANSACTION_READ_ COMMITTED
    3. TRANSACTION_SERIALIZABLE
    4. TRANSACTION_REPEATABLE_WRITE
  3. Sentence 3: Which of the following theo đây có thể thay thế trong vị trí 1 và 2 dưới Statement stmt = con.createStatement (1,2)
    1. ResultSet. TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY
    2. ResultSet. TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE
    3. All of the above.
    4. Neither of the above,
  4. Question 4: How many JDBC drivers are there?
    1. 2
    2. 4
    3. 3
    4. first
  5. Question 5: Which of the statement is true để nạp một JDBC driver. 1. registerDriver (Driver driver). 2. Class.forName (java.lang.String driverclass)
    1. first
    2. 2
    3. twelfth
    4. Neither of the above
  6. Question 6: Which of the following ment states is true for the Type 2 JDBC driver?
    1. Một kiểu 2 driver converts JDBC calls into calls cho một cơ sở dữ liệu Specific
    2. Trình điều khiển này được liên kết như là "native-API, mostly Java driver"
    3. Như với phần 1 driver, một số mã số mã số binary cần thiết trên máy phục vụ này, nghĩa là kiểu này của driver không phải được chọn để tải lên một máy phục vụ đến một máy phục vụ
    4. All of above
  7. Question 7: Which of the following is false about the Type 3 JDBC driver?
    1. A Type 3 driver is a JDBC-Net pure Java driver
    2. Dịch vụ dịch vụ JDBC này vào một giao thức cơ sở dữ liệu
    3. Vendors của cơ sở dữ liệu middleware có thể thực hiện này kiểu điều khiển vào các các tập tin để cung cấp số liên kết hợp với số nguyên của cơ sở dữ liệu.
    4. All of the above.
  8. Question 8: Which of the following allows non-repeatable read in JDBC connection class?
    1. TRANSACTION_READ_UNCOMMITTEDB
    2. TRANSACTION_READ_ COMMITTED
    3. TRANSACTION_SERIALIZABLE
    4. TRANSACTION_REPEATABLE_READ
  9. Question 9: Which of the following statement is false regarding exceptions in JDBC?
    1. SQLWarning objects are a subclass of SQLException that deal with database access warnings
    2. Warnings stop the execution of an application, as exceptions due; bạn cần phải xác định người dùng mà không đã xác định như là đợi
    3. Lỗi kết nối đã có một getWarning () method trong nó.
    4. Cấu hình và ResultSet đối tượng có getWarning () method trong nó.
  10. Question 10: Which of the following statement is false regarding các kiểu khác nhau của JDBC này.
    1. Regular Statement (use createStatement method)
    2. Prepared statement (use prepareStatement method)
    3. Callable statement (use prepareCall).
    4. Interim statement (use jdbcCall).
  11. Question 11: Which isolation level prevents dirty read in JDBC, connection class?
    1. TRANSACTION_READ_UNCOMMITTEDB
    2. TRANSACTION_READ_ COMMITTED
    3. TRANSACTION_SERIALIZABLE
    4. TRANSACTION_REPEATABLE_READ
  12. Question 12: Which of the following allows phantom read in JDBC, connection class?
    1. TRANSACTION_READ_UNCOMMITTEDB
    2. TRANSACTION_READ_ COMMITTED
    3. TRANSACTION_SERIALIZABLE
    4. TRANSACTION_REPEATABLE_READ
  13. Question 13: ResultSet.CONCUR_UPDATABLE used with the result set được dùng để cập nhật các dòng đã đặt trong cơ sở dữ liệu?
    1. True
    2. False
  14. Question 14: The data defined by th class được xác định đến như biến biến dữ liệu hoặc instance variables?
    1. True
    2. False
  15. Question 15: The Java compiler requires that a file source use . filename extension?
    1. .hour
    2. .java
    3. > java
    4. .class
5 ★ | 2 Vote
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