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Exam I

True/False
Indicate whether the statement is true or false.
 

 1. 

Very large peer-to-peer networks have emerged to take advantage of the Internet.
 

 2. 

Not all Transport layer protocols are concerned with reliability.
 

 3. 

The strength of an electrical signal is directly proportional to its frequency.
 

 4. 

Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
 

 5. 

All protocols are routable.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which network model ensures that no computer on the network has more authority than another?
a.
client/server
c.
peer-to-peer
b.
stand alone
d.
distributed
 

 2. 

Which network topology is the most common?
a.
ring
c.
hybrid
b.
star
d.
Ethernet
 

 3. 

The phenomenon of offering multiple types of communications services on the same network is known as ____.
a.
convergence
c.
divergence
b.
unified communications
d.
multi-communications
 

 4. 

____  is a popular career development tool for job seekers and a measure of an employee’s qualifications for employers.
a.
Certification
c.
Degree auditing
b.
Evaluation
d.
Apprenticeship
 

 5. 

Which certification requires candidates to pass lab exams?
a.
Cisco CCIE
c.
CompTIA Network+
b.
CompTIA A+
d.
Microsoft MCSE
 

 6. 

In which OSI model layer does TCP operate?
a.
Physical
c.
Network
b.
Transport
d.
Data Link
 

 7. 

Which type of protocol is useful when data must be transferred quickly?
a.
connection-oriented
c.
TCP
b.
connectionless
d.
IP
 

 8. 

The process of determining the best path from Point A on one network to Point B on another is known as ____.
a.
mapping
c.
reconfiguring
b.
enhancing
d.
routing
 

 9. 

In which OSI model layer does IP operate?
a.
Physical
c.
Network
b.
Transport
d.
Data Link
 

 10. 

Which IEEE standard describes Ethernet?
a.
802.1
c.
802.5
b.
802.3
d.
802.11
 

 11. 

Which IEEE standard describes specifications for wireless transmissions?
a.
802.1
c.
802.5
b.
802.3
d.
802.11
 

 12. 

The distance between corresponding points on a wave’s cycle is called its ____.
a.
amplitude
c.
phase
b.
frequency
d.
wavelength
 

 13. 

A digital signal composed of a pulse of positive voltage represents a(n) ____.
a.
0
c.
4
b.
1
d.
8
 

 14. 

The byte 00001110 means ____ on a digital network.
a.
3
c.
14
b.
6
d.
30
 

 15. 

One of the most common transmission flaws affecting data signals is ____.
a.
noise
c.
throughput
b.
attenuation
d.
latency
 

 16. 

TCP is a(n) ____ subprotocol.
a.
open-ended
c.
connection-oriented
b.
indiscriminating
d.
connectionless
 

 17. 

A(n) ____ number is the address on a host where an application makes itself available to incoming or outgoing data.
a.
port
c.
destination
b.
source
d.
application
 

 18. 

____ is more efficient than TCP for carrying messages that fit within one data packet.
a.
IP
c.
ICMP
b.
UDP
d.
IGMP
 

 19. 

____ ARP table entries are created when a client makes an ARP request that cannot be satisfied by data already in the ARP table.
a.
Static
c.
Temporary
b.
Dynamic
d.
On-demand
 

 20. 

In the TCP/IP protocol suite, ____ is the core protocol responsible for logical addressing.
a.
TCP
c.
IP
b.
UDP
d.
ARP
 

 21. 

In IPv4 addressing, each IP address is a unique ____ number.
a.
12-bit
c.
64-bit
b.
32-bit
d.
128-bit
 

 22. 

The default subnet mask for a Class B network is ____.
a.
255.0.0.0
c.
255.255.255.0
b.
255.255.0.0
d.
255.255.255.255
 

 23. 

In most cases, BOOTP has been surpassed by the more sophisticated IP addressing utility, ____.
a.
DNS
c.
DHCP
b.
RARP
d.
APIPA
 

 24. 

If the standard port number for the Telnet service is 23, a host whose IPv4 address is 10.43.3.87 has a socket address for Telnet of ____.
a.
10.43.3.87/23
c.
10.43.3.87-23
b.
10.43.3.87:23
d.
23:10.43.3.87
 

 25. 

____ is a simple Application layer protocol used to synchronize the clocks of computers on a network.
a.
NNTP
c.
PING
b.
NTP
d.
ARP
 

Completion
Complete each statement.
 

 1. 

In a(n) ____________________ network, every computer can communicate directly with every other computer.
 

 

 2. 

To function as a server, a computer must be running a(n) ____________________.
 

 

 3. 

A network that connects two or more geographically distinct LANs or MANs is called a(n) ____________________.
 

 

 4. 

TCP ensures reliable data delivery through sequencing and ____________________.
 

 

 5. 

A(n) ____________________ is a special 32-bit number that, when combined with a device’s IP address, informs the rest of the network about the segment or network to which the device is attached.
 

 

Matching
 
 
Match each item with a statement below:
a.
bit
f.
populated segment
b.
data modulation
g.
unpopulated segment
c.
baseband
h.
broadband
d.
EMI (electromagnetic interference)
i.
nonbroadcast
e.
broadcast
 

 1. 

Transmission that involves one transmitter and multiple, undefined receivers.
 

 2. 

A common source of noise.
 

 3. 

Every pulse in a digital signal.
 

 4. 

Part of the network that does not contain end nodes.
 

 5. 

A form of transmission in which signals are modulated as radio frequency (RF) analog waves that use different frequency ranges.
 
 
Match each item with a statement below:
a.
Well Known Ports
f.
dotted decimal notation
b.
Registered Ports
g.
namespace
c.
fully qualified host name
h.
host file
d.
resolvers
i.
Dynamic Ports
e.
DNS
 

 6. 

The most common way of expressing IP addresses.
 

 7. 

Ports ranging from 49152 through 65535; open for use without restriction.
 

 8. 

The database of Internet IP addresses and their associated names.
 

 9. 

A hierarchical way of associating domain names with IP addresses.
 

 10. 

Any hosts on the Internet that need to look up domain name information.
 

Short Answer
 

 1. 

Describe a drawback of analog signals.
 

 2. 

Describe variables that may influence the final cost of implementing a certain type of media.
 

 3. 

Describe multicasting.
 

 4. 

Describe how ARP improves efficiency of MAC-to-IP address mappings.
 

 5. 

Describe the size differences in IPv4 and IPv6 IP addresses.
 



 
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