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Questions # 41:

Which statement will open the /etc/passwd file for reading only?

Options:
A.

open(PASSFILE "+>/etc/passwd");

B.

open(PASSFILE, "/etc/passwd");

C.

open(PASSFILE "+

D.

open(PASSFILE, ">/etc/passwd");

Expert Solution
Questions # 42:

Which line of code represents the correct syntax to establish a reference to a database handle?

Options:
A.

$dbh = DBI::connect("dbi:mysql:myPhoneBook");

B.

$dbh = DBD:->connect("dbi::mysql::myPhoneBook");

C.

$dbh = DBD::connect("mysql:dbi:myPhoneBook");

D.

$dbh = DBI->connect("dbi:mysql:myPhoneBook");

Expert Solution
Questions # 43:

Consider the program code in the attached exhibit. What is the result of executing this program code?

Question # 43
Options:
A.

The code will output the following:

3 4

B.

The code will output the following:

1 2 3 4

C.

The code will output the following:

1 2 4 5

D.

The code will output the following:

1 2 5

Expert Solution
Questions # 44:

Which of the following accurately describes the roles of the Database Interface Module (DBI) and the Database Driver Module (DBD)?

Options:
A.

DBI transmits instructions to a database; DBD directs method calls to DBI.

B.

DBD transmits instructions to a database; DBI directs method calls to DBD.

C.

DBI makes available database-specific code; DBD transmits method calls to DBI.

D.

DBD makes available database-specific code; DBI translates method calls to DBD.

Expert Solution
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