Answer:NULL Scan
Explanation:RFC 793(Request for comments) is a type of RFC command labeled with the number 793 which can operate with the TCP protocol.They are sort of document form which is from IETF( Internet Engineering Task Force ).
The null scan is scanning protocol used by legal as well as illegal hackers for working in the transfer control protocol architecture. It is used for the identification of the the ports and holes in TCP servers.they can also have the negative impact if used by the illegal hackers.
Answer:
They can help to explain the relationship between the output and input variables.
Hope this Helps!
Answer: Plastic, metal, rubber, wiring, electricity, technology, wifi,
Explanation: You need PLASTIC to make a frame for the computer. METAL
to make an exoskeleton under the plastic frame. RUBBER to hold those loose wires and to make sure the electricity doesn't escape and shock you. ELECTRICITY to charge and make the computer runs. Technology is used for you to log in and out of your computer and WIFI to make sure it doesn't lag.
<u>Explanation:</u>
<em>Remember, </em>Malware is a word coined from the words Malicious-Software (Mal...ware). Thus, Malware could be defined as software that is intentionally designed by cybercriminals to gain access or cause damage to a computer or network.
a. Cindy may learn the difference between these two techniques used to create a malware attack:
- through downloads from malicious websites: An attacker may design a malicious website; in which unsuspecting users who visit the site may click to download certain files, but these are actually malware software been installed.
- through malicious emails: This email may contain attachments which if opened or downloaded by an unsuspecting user would infect their computer with malware.
b. Here are some common suggestions;
- Never open attachments from strange email addresses.
- install a paid antivirus software.
- be mindful of websites with too many ads.
Answer:
a) We know that atleast one or more author writes a book.
Symbol to indicate one or more is (B)
So the correct option is B
b) We know that zero to multiple books are written by any author.
Symbol to indicate zero or more is (A)
So the correct option is A
c) The fourth option is correct if we replace by many to many relationship and generate a new entity.
So the relationship betweem author and contract is one to many. So we know that there is atleast one author that represent in symbol d and books has atleast 0 that represent in symbol c.
So Fourth Option is correct d at blue side and c at red side.
d) There are two forirgn keys in table Contract one is from AuthorId and other is ISBN.
So correcct option is C
