Discuss what a firewall is and its role in a company's overall security scheme.

What will be an ideal response?


A firewall is hardware or software that can be configured to block unauthorized access to a
network. Firewall is often viewed as a catch-all term to represent any device that can block
attackers or viruses.
Firewalls cannot protect against employees who send proprietary information outside an organization through a network connection or copy confidential data to a disk. A strong security policy and access controls on sensitive information are needed to protect against such incidents. A firewall also cannot protect connections that do not go through it, such as remote dial-up connections. These connections require a virtual private network (VPN) for protection.
The term firewall does not necessarily refer to a single router, computer, VPN gateway, or
software program. Any network firewall is a combination of software and hardware components. A firewall can consist of all devices positioned on the network perimeter, so the
term firewall perimeter might be more descriptive.

Computer Science & Information Technology

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Which statement is false?

a. A ListIterator accesses the elements of a List. b. Class ArrayList is a fixed-size array. c. A LinkedList is a linked list implementation of a List. d. ArrayLists execute faster than Vectors because they are not thread safe.

Computer Science & Information Technology

A ____-dimensional array resembles a table in that the variables (elements) are in rows and columns.

A. one B. two C. three D. four

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_________ is the process that gets a computer ready to be used and occurs when you power up a computer. A. Swap process B. Boot process C. Sole process D. Start-up process

Fill in the blank(s) with the appropriate word(s).

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C++ allows the use of references for indirect addressing.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology