COMM 439 Final Exam Questions And
Answers With Verified Solutions Already
Passed!!!
What is data communications - ANSWER✔✔ the encoded transmission of data via
electrical, optical, or wireless means between computers or network processors
what is the role of data communication in an enterprise - ANSWER✔✔
who are the key stakeholders inn the data communications industry -
ANSWER✔✔
how do LANS differ from WANS and BNs - ANSWER✔✔
difference between extranet and intranet - ANSWER✔✔
What are protocols - ANSWER✔✔ a set of rules that defines a method for
transmitting data between different devices over a network.
why are protocols grouped into layers - ANSWER✔✔
What is the OSI model and who developed it? - ANSWER✔✔
List five layers of Internet Model w/ brief explanation of what they do -
ANSWER✔✔
,why are standards important in data communications - ANSWER✔✔
How are Internet standards developed? - ANSWER✔✔
What is a formal standard? de-facto standard? - ANSWER✔✔
Name two important data communications standards-making bodies and example
of the standards they developed - ANSWER✔✔
difference between directory and directory service - ANSWER✔✔
difference between domain, tree, and forest - ANSWER✔✔
what is a global catalog - ANSWER✔✔
what is a domain controller? - ANSWER✔✔
what are the standard NTFS folder permissions? - ANSWER✔✔
What does the data link layer do? - ANSWER✔✔
what is media access control and why is it important - ANSWER✔✔
under what conditions is media access control unimportant? - ANSWER✔✔
, What is roll call polling? Hub polling? Token passing? Contention? -
ANSWER✔✔
What is attenuation? - ANSWER✔✔
What is cross-talk? - ANSWER✔✔
Briefly describe how even parity and odd parity work - ANSWER✔✔
explain how multiple bit errors can remain undetected using simply parity
checking - ANSWER✔✔
what is a checksum - ANSWER✔✔
What is CRC? - ANSWER✔✔ Cyclical Redundancy Check:
compare/contrast stop-and-wait ARQ vs continuous ARQ - ANSWER✔✔
diff between aysnc transmissions and synchronous transmission - ANSWER✔✔
brief describe frame layout for ethernet - ANSWER✔✔
what is transmission efficiency - ANSWER✔✔
Answers With Verified Solutions Already
Passed!!!
What is data communications - ANSWER✔✔ the encoded transmission of data via
electrical, optical, or wireless means between computers or network processors
what is the role of data communication in an enterprise - ANSWER✔✔
who are the key stakeholders inn the data communications industry -
ANSWER✔✔
how do LANS differ from WANS and BNs - ANSWER✔✔
difference between extranet and intranet - ANSWER✔✔
What are protocols - ANSWER✔✔ a set of rules that defines a method for
transmitting data between different devices over a network.
why are protocols grouped into layers - ANSWER✔✔
What is the OSI model and who developed it? - ANSWER✔✔
List five layers of Internet Model w/ brief explanation of what they do -
ANSWER✔✔
,why are standards important in data communications - ANSWER✔✔
How are Internet standards developed? - ANSWER✔✔
What is a formal standard? de-facto standard? - ANSWER✔✔
Name two important data communications standards-making bodies and example
of the standards they developed - ANSWER✔✔
difference between directory and directory service - ANSWER✔✔
difference between domain, tree, and forest - ANSWER✔✔
what is a global catalog - ANSWER✔✔
what is a domain controller? - ANSWER✔✔
what are the standard NTFS folder permissions? - ANSWER✔✔
What does the data link layer do? - ANSWER✔✔
what is media access control and why is it important - ANSWER✔✔
under what conditions is media access control unimportant? - ANSWER✔✔
, What is roll call polling? Hub polling? Token passing? Contention? -
ANSWER✔✔
What is attenuation? - ANSWER✔✔
What is cross-talk? - ANSWER✔✔
Briefly describe how even parity and odd parity work - ANSWER✔✔
explain how multiple bit errors can remain undetected using simply parity
checking - ANSWER✔✔
what is a checksum - ANSWER✔✔
What is CRC? - ANSWER✔✔ Cyclical Redundancy Check:
compare/contrast stop-and-wait ARQ vs continuous ARQ - ANSWER✔✔
diff between aysnc transmissions and synchronous transmission - ANSWER✔✔
brief describe frame layout for ethernet - ANSWER✔✔
what is transmission efficiency - ANSWER✔✔
