Page | 1
Computer Networking Chapter 1 - Review
Questions and Verified Answers
Q: What is the difference between a host and an end system?
List several different types of end systems.
Is a Web server an end system?
ANS: A host is an end system, and vice versa.
Types of end systems: desktops, laptops, smartphones, tablets, automobiles, various
sensors, etc.
Yes, a Web server is an end system.
Q:
The word protocol is often used to describe diplomatic relations. How does Wikipedia
describe diplomatic protocol?
ANS: A protocol is described as the rules of etiquette for heads of state, for example
in what order diplomats address representatives of other nations often in order of
decreasing importance and power.
Q:
Why are standards important for protocols?
ANS: Standards are important for protocols so that both communicating computers
are sending and interpreting data in the same order and manner.
Q:
List six access technologies. Classify each one as home access, enterprise access, or wide
area network access.
, Page | 2
ANS: DSL(Digital Subscriber Line) - Home Access
Cable - Home Access
FTTH(Fiber to the Home) - Home Access
Dial-Up - Home Access
Satellite - Home Access
Ethernet - Enterprise (and Home) Access
WiFi - Enterprise (and Home) Access
3G - Wide Area Network Access
LTE - Wide Area Network Access
Q:
Is HFC transmission rate dedicated or shared among users? Are collisions possible in a
downstream HFC channel? Why or why not?
ANS: HFC (cable internet) transmission rate is shared among users. There are no
collisions in the downstream channel because all packets come from a single
source, the head end.
Q:
List the available residential access technologies in your city. For each type of access,
provide the advertised downstream rate, upstream rate, and monthly price.
ANS: In most American cities, the current possibilities include: dial-up; DSL; cable
modem; fiber- to-the-home.
HFC - 300 mbps - $65
- 100 mbps - $65
- 2 mbps - $15
Q:
What is the transmission rate of Ethernet LANs?
Computer Networking Chapter 1 - Review
Questions and Verified Answers
Q: What is the difference between a host and an end system?
List several different types of end systems.
Is a Web server an end system?
ANS: A host is an end system, and vice versa.
Types of end systems: desktops, laptops, smartphones, tablets, automobiles, various
sensors, etc.
Yes, a Web server is an end system.
Q:
The word protocol is often used to describe diplomatic relations. How does Wikipedia
describe diplomatic protocol?
ANS: A protocol is described as the rules of etiquette for heads of state, for example
in what order diplomats address representatives of other nations often in order of
decreasing importance and power.
Q:
Why are standards important for protocols?
ANS: Standards are important for protocols so that both communicating computers
are sending and interpreting data in the same order and manner.
Q:
List six access technologies. Classify each one as home access, enterprise access, or wide
area network access.
, Page | 2
ANS: DSL(Digital Subscriber Line) - Home Access
Cable - Home Access
FTTH(Fiber to the Home) - Home Access
Dial-Up - Home Access
Satellite - Home Access
Ethernet - Enterprise (and Home) Access
WiFi - Enterprise (and Home) Access
3G - Wide Area Network Access
LTE - Wide Area Network Access
Q:
Is HFC transmission rate dedicated or shared among users? Are collisions possible in a
downstream HFC channel? Why or why not?
ANS: HFC (cable internet) transmission rate is shared among users. There are no
collisions in the downstream channel because all packets come from a single
source, the head end.
Q:
List the available residential access technologies in your city. For each type of access,
provide the advertised downstream rate, upstream rate, and monthly price.
ANS: In most American cities, the current possibilities include: dial-up; DSL; cable
modem; fiber- to-the-home.
HFC - 300 mbps - $65
- 100 mbps - $65
- 2 mbps - $15
Q:
What is the transmission rate of Ethernet LANs?
