Answer:
A. data-link layer
Explanation:
Data-link layer is the first layer and allows a contiguous sequence of bits to be transmitted through the network.
On top of it is the Network Layer and it handles the task of routing network messages from one computer to another.
Then comes the Transport Layer which is the basic layer at which one network computer communicates with another network computer.
Answer:
Below is the required code:
Explanation:
SELECT Product_Finish AS "Desk Finish",
avg(Standard_Price) AS "Average Price"
FROM Product_T
WHERE "Average Price">200
ORDER BY "Average Price" DESC;
Without system software, system can not run on the other hand without application software, system always runs