Statement two and three is correct. 
Statement 1 is incorrect. A relative reference changes when a formula is copied to another cell while Absolute references remain constant. However, it is safe to say that an absolute address can be preceded by a $ sign before both the row and the column values. It is designated by the addition of a dollar sign either before the column reference, the row reference, or both. Statement C is also correct. A mixed reference is a combination of relative and absolute reference and the formula (= A1 + $B$2) is an example of a mixed cell reference.
 
        
                    
             
        
        
        
I’m not to sure what this is asking, if by selecting word- it means the word is already left-click selected, so it would be option 3. If not, then it would be option 2 I believe
        
             
        
        
        
Answer
The senders PC is using UDP protocol
Explanation
UDP is the User Datagram Protocol which is used as an alternative communication protocol to the TCP which is used primarily for establishing low latency and loss of tolerating connections between applications on the internet UDP is normally used by the programs running on different computers on a network. Its purposes is to send short messages which are datagrams. It is not much reliable because of its occasional loss of packet. Due to this packet loss  the recipient is not guaranteed that the data being streamed will not get interrupted. This is because If a router on the Internet starts getting overloaded, or a packet gets corrupted due to interference or anything, the packet will be dropped unlike the TCP (Transmission control  protocol)which resend the packets and keeps re sending. The UDP does not resend the packets which are dropped. Once they are dropped that all.
 
        
             
        
        
        
Answer:
Explanation:
Operation Address Hit? Read Value
Read 0x834	No	Unknown
Write 0x836	Yes (not applicable)
Read 0xFFD	Yes CO
 
        
             
        
        
        
Answer:
The overview including its problem is listed in the explanation segment following.
Explanation:
- The cool, unobstructed front develops whenever the cool front overwhelms the warm side or front. 
- The warm front increases over its colder, then gradually move towards the surface of the earth. 
The subsequent weather system seems to be close to something like a moving warmer front.
So that the above seems to be the right answer.