?________________ contain file and directory metadata and provide a mechanism for linking data stored in data blocks.

MC When a program attempts to access an identifier’s value, Python searches the namespaces in what order?

a) local, built-in, global. b) built-in, global, local. c) local, global, built-in. d) global, built-in, local.

The expression $test = substr_replace($test, 'X', -1); replaces:

a. The last character in $test b. The second character in $test c. The first character in $test d. The entire $test string