Describe TCP and how it provides reliability of packet delivery.
What will be an ideal response?
In TCP/IP, the protocol that guarantees packet delivery is TCP (Transmission Control Protocol). TCP makes a connection, checks whether the data is received, and resends it if it is not. TCP is, therefore, called a connection-oriented protocol. TCP is used by applications such as web browsers and email. Guaranteed delivery takes longer and is used when it is important to know that the data reached its destination. For TCP to guarantee delivery, it uses protocols at the IP layer to establish a session between client and server to verify that communication has taken place. When a TCP packet reaches its destination, an acknowledgment is sent back to the source. If the source TCP does not receive the acknowledgment, it resends the data or passes an error message back to the higher-level application protocol.
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The comb-like artifact in a digital video, as shown in Figure 6.18 , occurs in the _____ video.
Figure 6.18 A digital video frame showing comb-like artifacts.
A. interlaced
B. progressive
C. both A and B
A(n) ________ is a control structure that continues to be performed while a test condition is true
Fill in the blank(s) with correct word
SWF files are scalable and compact, which makes them perfect for the web.
Answer the following statement true (T) or false (F)
You are creating an IIF function. If the input in the Net Sales field is greater than or equal to 60, then the custom field will read "Pass." If Net Sales are less than 40, the custom field will read "Fail." What is the function that will be entered into the field name?
A) If([Net Sales]>=.60, "Pass", "Fail") B) If([Net Sales] >=60, Pass, Fail) C) IIf(Net Sales >=60, Pass, Fail) D) IIf([Net Sales] >=60, "Pass", "Fail")