Answer:
RAM
ROM
PROCESSOR 
MOTHER BOARD
HARD DISK
Explanation:
Random access memory or RAM store data temporary 
Read only memory or ROM permanently store data and have a programming needed to start (PCs) or other electronic device
CPU or processor refers to brain of computer 
 Mother board the main internal hardware component of system unit
Hard disk is electro mechanical data storage 
 
        
             
        
        
        
Answer:
<em>Plasma display panel </em>(PDP)
Explanation:
<em>Plasma display panel </em>(PDP) is a type of flat panel display that uses small cells containing electrically charged ionized gases or plasmas, to produce an image. PDP consists of millions of tiny gas-filled compartments, or cells, between two panels of glass with parallel electrodes deposited on their surfaces.
 
        
             
        
        
        
Answer: Internet layer in TCP/IP stack is used for the transmitting and exchanging of information or message between the source and destination in computer systems.The main functions performed by this layer are as follows:-
- It  transfers the message to the network interface layer 
 - The correct information route and destination is established
 - Prefers intelligent routing technique by choosing the shortest route among all paths 
 - If any error case of transmission arises then another alternate path for datagram transmission is used. 
 
 
        
             
        
        
        
Answer: second option: Operating system...
An operating system is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's language.
Hope this helps... Stay safe and have a Merry Christmas!!!!!!! :D