One of the problems associated with embedding an external file name within program code is that there is no provision for a user to enter or change the desired file name while the program is executing.

A(n) ________ is the total of the numbers in a packet used for error control

Fill in the blank(s) with correct word

Today, application proxy firewalls are commonly used ________.

a. to protect internal clients from malicious external servers b. as main border firewalls c. Both to protect internal clients from malicious external servers and as main border firewalls d. Neither to protect internal clients from malicious external servers nor as main border firewalls