Answer and Explanation:
a) Key for the relation courses is HS.
b) FD's are already minimal basis, as no attributes can be removed from the left side, right side is having only single attributes and none of the FD can be removed as given in the question.
c) By using the 3NF synthesis algorithm, the final set of relations obtained will be CT, HRC, HTR, HSR, CSG (FD'S are already proved to be minimal basis in part (b)). All the relations are in BCNF.
It is grouped according to raster and vector format. Raster format are images used in a computer or printed. Vector format stores data and is compressed.
Examples of common raster formats usually used in a computer are; jpeg, png, bitmap, and gif. Vector formats are; CGM, SVG and 3D vector.
Answer:
The separation of HTML from CSS makes it easier to maintain sites, share style sheets across pages, and tailor pages to different environments. This is referred to as the separation of structure (or: content) from presentation.
Explanation:
I think this right don't add me right then add
Answer:
string1 = "this is string 1"
string2 = " this is string 2"
print(string1 + string2)
Explanation:
the string1 variable is assigned with a string value(aka. str)
string2 is also a variable assigned with a slightly different string value
the 3rd line then prints string 1 and 2 to the console.
Answer:
A and C
Explanation:
Option A:
In IPv6 there is a rule to reduce an IPv6 address when there are two or more consecutive segments of zeros just one time. This rule says that you can change the consecutive zeros for “::”
Here is an example
How to reduce the following IPv6 address?
ff02:0000:0000:0000:0000:0000:0000:d500
Ans: ff02::d500
Example 2:
2001:ed02:0000:0000:cf14:0000:0000:de95
Incorrect Answer -> 2001:ed02::cf14::de95
Since the rule says that you can apply “::” just one time, you need to do it for a per of zero segments, so the correct answer is:
Correct Answer -> 2001:ed02::cf14:0:0:de95
Or
2001:ed02:0:0:cf14::de95
Option C:
Since in IPv6 there are 
available addresses which means 340.282.366.920.938.463.463.374.607.431.768.211.456 (too many addresses), there is no need of NAT solution, so each device can have its own IP address by the same interface to have access through the internet if needed. If not, you can block the access through internet by the firewall.
