Answer:
Denial of Service attack
Explanation:
Denial of service is a type of attack on computer systems in which a particular system is targeted and flooded with traffic from multiple systems, thus causing an overload of the attacked system, and an eventual crash. The aim of the perpetrators of this attack is to prevent the rightful owners of the system from gaining access to it.
The above described attack is a Denial of service attack because;
1. the attack came from multiple computers
2. the attacked server experienced an overload most likely caused because it was overwhelmed with traffic.
Which of the following is a sample IPv4 address?
99.14.242.51
99.14.342.51
99.14.242.51.21
002:0de6:0001:0042:0100
Answer:
The first one, 99.14.242.51 is the only valid IPv4 address listed.
Explanation:
An IPv4 address is formatted as four eight-bit numbers separated by decimals. This means that a valid one will have four numbers from 0 to 255, with decimals in between.
The first one, 99.14.242.51 is a valid IPv4 address.
The second one has the number 342, which is greater than eight bits.
The third one has five octets.
The fourth one is in the wrong format altogether, using what appear to be 32-bit numbers
Use the YEARFRAC function to work out how many years difference is there between the date 1980-07-31 (31 July 1980) and 1998-05-02 (2 May 1998) (to 1 decimal place)?
Answer: 17.7 Years
Explanation:
YEARFRAC is a function in Microsoft Excel that returns the year fraction representing the number of whole days between a particular start date and an end date.
A typical view of the function is:
=YEARFRAC(start_date, end_date, [basis])
All that needs to be done is
1. Type in the equal to sign(=) in the cell you want your answer,
2. Type in YEARFRAC and open your bracket,
3. Input your start date and end date, close your bracket and press enter.
There are a number of roles held by various users of online digital media, including contributors, conversationalists,
critics, organizers, spectators, and joiners. Often, people who have a strong presence online will hold two or more roles.
Describe at least three of these roles. Of the roles you described, why might someone act on two of them at the same
time? That is, what kind of online activity would result in a person taking on those two roles?
Answer:
The mass media is a huge phenomenon. Through the various different platforms, print or broadcast, the media is able to reach millions of people like no other force. Without the media, powerful speeches by politicians would affect no one, local events would remain local, and performances by great actors would be seen only by the people in the immediate audience. The media overcomes distances, and builds a direct relationship with the audience. Many sociologist
