EQuiz - Multiple Choice Test on JDBC - Part 1

This article presents EQuiz - Multiple Choice Test on JDBC - Part 1 in a clear, structured format. It helps readers review key concepts, test their understanding, and learn from the material.

Understanding EQuiz

• Question 1: Which of the following is true regarding use of the JDBC-ODBC bridge with the applets?
  • S? d?ng c?a JDBC-ODBC bridge t? ch?a ???c b? qua applet ?ang ch?y trong a browser, nh? Netscape Navigator, isn't allowed.
  • Không th? s? d?ng JDBC-ODBC bridge v?i ?ng d?ng s? s? ch?y trong appletviewer since appletviewer assumes that applets are trusted.
  • Pure Java JDBC drivers work well with applets. They are fully downloadable and do not require any client-side configuration.
  • All of the above.
• Question 2: Which of the following is không ph?i ch? ?? phân vùng trong JDBC?
  • TRANSACTION_READ_UNCOMMITTEDB
  • TRANSACTION_READ_ COMMITTED
  • TRANSACTION_SERIALIZABLE
  • TRANSACTION_REPEATABLE_WRITE
• Sentence 3: Which of the following theo ?ây có th? thay th? trong v? trí 1 và 2 d??i Statement stmt = con.createStatement (1,2)
  • ResultSet. TYPE_FORWARD_ONLY, ResultSet. CONCUR_READ_ONLY.
  • ResultSet. TYPE_SCROLL_INSENSITIVE, ResultSet. CONCUR_UPDATABLE.
  • All of the above.
  • Neither of the above,
• Question 4: How many JDBC drivers are there?
  • 2
  • 4
  • 3
  • first
• Question 5: Which of the statement is true ?? n?p m?t JDBC driver. 1. registerDriver (Driver). 2. Class.forName (java.lang. String driverclass)
  • first
  • 2
  • twelfth
  • Neither of the above
• Question 6: Which of the following ment states is true for the Type 2 JDBC driver?
  • M?t ki?u 2 driver converts JDBC calls into calls cho m?t c? s? d? li?u Specific.
  • Trình ?i?u khi?n này ???c liên k?t nh? là "native-API, mostly Java driver".
  • All of above
• Question 7: Which of the following is false about the Type 3 JDBC driver?
  • A Type 3 driver is a JDBC-Net pure Java driver.
  • D?ch v? d?ch v? JDBC này vào m?t giao th?c c? s? d? li?u.
  • Vendors c?a c? s? d? li?u middleware có th? th?c hi?n này ki?u ?i?u khi?n vào các các t?p tin ?? cung c?p s? liên k?t h?p v?i s? nguyên c?a c? s? d? li?u.
  • All of the above.
• Question 8: Which of the following allows non-repeatable read in JDBC connection class?
  • TRANSACTION_READ_UNCOMMITTEDB
  • TRANSACTION_READ_ COMMITTED
  • TRANSACTION_SERIALIZABLE
  • TRANSACTION_REPEATABLE_READ
• Question 9: Which of the following statement is false regarding exceptions in JDBC?
  • SQLWarning objects are a subclass of SQLException that deal with database access warnings.
  • Warnings stop the execution of an application, as exceptions due; b?n c?n ph?i xác ??nh ng??i dùng mà không ?ã xác ??nh nh? là ??i.
  • L?i k?t n?i ?ã có m?t getWarning () method trong nó.
  • C?u hình và ResultSet ??i t??ng có getWarning () method trong nó.
• Question 10: Which of the following statement is false regarding các ki?u khác nhau c?a JDBC này.
  • Regular Statement (use createStatement method)
  • Prepared statement (use prepareStatement method)
  • Callable statement (use prepareCall).
  • Interim statement (use jdbcCall).
• Question 11: Which isolation level prevents dirty read in JDBC, connection class?
  • TRANSACTION_READ_UNCOMMITTEDB
  • TRANSACTION_READ_ COMMITTED
  • TRANSACTION_SERIALIZABLE
  • TRANSACTION_REPEATABLE_READ
• Question 12: Which of the following allows phantom read in JDBC, connection class?
  • TRANSACTION_READ_UNCOMMITTEDB
  • TRANSACTION_READ_ COMMITTED
  • TRANSACTION_SERIALIZABLE
  • TRANSACTION_REPEATABLE_READ
• Question 13: ResultSet. CONCUR_UPDATABLE used with the result set ???c dùng ?? c?p nh?t các dòng ?ã ??t trong c? s? d? li?u?
  • True
  • False
• Question 14: The data defined by th class ???c xác ??nh ??n nh? bi?n bi?n d? li?u ho?c instance variables?
  • True
  • False
• Question 15: The Java compiler requires that a file source use. filename extension?
  • .hour
  • .java
  • > java
  • .class