Answer:
C. Fields
Explanation:
Fields are used to store all the data in a database.
Answer:
Status Bar: a horizontal window at the bottom of a parent window in which an application can display various kinds of status information. The status bar can be divided into parts to display more than one type of information. The following screen shot shows the status bar in the Microsoft Windows Paint application.
Title Bar: horizontal bar at the top of a window, bearing the name of the program and typically the name of the currently active document.
Tabs: a tab is a clickable area at the top of a window that shows another page or area
Answer:
See explaination
Explanation:
def readFileFirstLast(filename):
# doc string
''' Function accept the filename and opens the fle
and reads all lines and strips new line character and
stores first and last in a string and return that string'''
#eception handle if file not found
try:
#opening the file
f = open(filename)
#reading the first line and striping the ne line
string = f.readline().strip()
#iterating until last line
for line in f:
pass
#concate the last line after strip the new line character to the string
string = string + " " + line.strip()
#return the string
return string
except:
#if file not found
return "File not found"
#taking the file name from user
filename = input("Enter a file name: ")
#printing the doc string in function
print("\ndoc_sting: \n"+ readFileFirstLast.__doc__+"\n")
#printing the returned string by calling the readFileFirstLast()
print("output string :")
print(readFileFirstLast(filename))
Answer:
c. Messages flowing to the client typically use a source TCP port number of 80.
d. Messages flowing to the server typically use TCP.
Explanation:
When fred open the web browser and start a connection to the www.certskills.com website.Two things happens from the mentioned things
1.Messages that are going to the server are use TCP(Transmission Control Protocol).
2.Message goes to the client uses port number 80 that is of TCP used for transferring web pages.
Because the port number 80 is reserved for the HTTP used for transferring web pages that uses TCP protocol.
Answer:
Nelson proposed a system where copying and linking any text excerpt, image or form was possible.
Explanation:
Ted Nelson is one of the theoretical pioneers of the world wide web who is best known for inventing the concept of hypertext and hypermedia in the 1960s. As one of the early theorists on how a networked world would work.
How I know:
I goggle it.
