You need to attach a document of where i would read it from
It is responsible for transmitting these bits as signals over a wire, optical fiber, wireless, or other <span>medium.</span>
Changing a worksheet name in Microsoft Excel can be done in multiple ways, but only one of them is correctly explained in the provided option, which is (A) double-click both the worksheet tabs one at a time and then enter the new names.
The other options are incorrect. Even though you can change a worksheet’s name by right-clicking the sheet name, you also need to choose the appropriate option from the window bar that would appear – which is, of course, the rename option.
Answer:
ALTER TABLE Products
ADD Products_price float(5,2) DEFAULT 9.99,
ADD Adding_time datetime;
Explanation:
So at first we need to use ALTER TABLE statement, when we use this statement we also need to provide the table name. In this case, i assume it is 'Products'.
Then, as per question, we need to add two columns.
The first one is 'product_price' and it contains decimal points. So, we need to use ADD statement and give a column name like 'Prodcuts_price' and its datatype 'float' because it contains decimal or floating points. so, for 3 digits on the left and 2 digits on the right, it makes a total of 5 digits. So, we need to declare it like this. (5,2) it means a total of 5 digits and 2 after the decimal point. after that, we need to set our Default value using the DEFALUT statement. so DEFAULT 9.99. it will set the default value to 9.99 for existing products.
And for our next column, we give its a name like 'Adding_time' then it's datatype 'datetime' because it will contain date and times.
The type of attack that the hacker performed is Domain Name System (DNS) server cache poisoning.
<h3>What is DNS poisoning?</h3>
In Domain Name System (DNS) server cache poisoning, the hackers often enter into a DNS server because they want to make an adjustment to its directory so that it can point the domain name users enter to a wrong, IP address.
Note that Domain Name Server (DNS) poisoning is a form of system attack in which there is the change of DNS records which are then used to redirect online traffic to a wrong website.
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