Ethernet is best to use when you have to download large files on a network.
        
             
        
        
        
<span>Worms are programs that run independently and travel between computers and across networks.
</span>Those are malicious programs which are exploiting operating system vulnerabilities and by doing so they spread itself. They <span>self-replicate on computers or via computer networks without the user being aware.</span>
        
             
        
        
        
Answer: B.  PDF
Explanation:
Portable Document Format (PDF) is such an important document that it is considered the international standard for information and document exchange. It is used for letters, resumes and even electronic contracts. 
PDF was developed by Adobe to make it independent of the device or application it is being viewed on and combines layers of information into one layer thereby making it a flat document.
 
        
             
        
        
        
Answer:
The correct option to the following question is CDO(Collateralized Debt Obligation).
Explanation:
CDO(collateralized debt obligations), is the financial tool that is used by the banks to repackage the individual loans into the product sold to the investors on secondary markets.
It developed as the instruments for corporate debts markets, after the year 2002, CDO became the vehicles for refinancing the mortgage backed the securities.
A CDO is the type of the structured asset backed security. 
 
        
             
        
        
        
Answer:

<em><u>A Medication Administration Record (MAR, or eMAR for electronic versions), commonly referred to as a drug chart, is the report that serves as a legal record of the drugs administered to a patient at a facility by a health care professional. The MAR is a part of a patient's permanent record on their medical chart</u></em>