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2016 NEW Cisco 640-911: Introducing
Cisco Data Center Networking (DCICN)
Exam Questions and Answers
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QUESTION 31
Which device forwards data based on the destination IP address?
A.
B.
C.
D.
E.

repeater
bridge
switch
router
hub

Answer: D
QUESTION 32
Which network topology is most closely associated with classical CSMA/CD?
A.
B.
C.
D.
E.

bus
token passing bus
star
extended star
ring

Answer: A
QUESTION 33
Which network topology is most closely associated with FDDI?

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A.
B.
C.
D.
E.

bus
token passing bus
star
extended star
ring

Answer: E
Explanation:
http://en.wikipedia.org/wiki/Fiber_Distribut ed_Dat a_Interface
QUESTION 34
Which layer of the OSI model is associated with Token Ring Media Access Control?
A.
B.
C.
D.
E.
F.
G.

datagram
routing
network
data link
transport
transmission
session

Answer: D
Explanation:
"Token ring local area network (LAN) technology was a protocol which resided at the data link
layer (DLL) of the OSI model."
http://en.wikipedia.org/wiki/Token_ring
QUESTION 35
When deploying 10BASE-2 Ethernet, which type of connector is used?
A.
B.
C.
D.
E.
F.
G.
H.

AUI
UTP
STP
BNC
RJ-11
RJ-45
ST
DC

Answer: D
Explanation:
"10BASE2 (also known as cheapernet, thin Ethernet, thinnet, and thinwire) is a variant of
Ethernet that uses thin coaxial cable (RG-58A/U or similar, as opposed to the thicker RG-8 cable
used in 10BASE5 networks), terminated with BNC connectors"
http://en.wikipedia.org/wiki/10BASE2
QUESTION 36
When deploying 10BASE-2 Ethernet, what is the maximum cable length?

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A.
B.
C.
D.
E.
F.

100
100
150
150
185
185

meters
feet
meters
feet
meters
feet

Answer: E
Explanation:
"10BASE2 coax cables have a maximum length of 185 meters (607 ft). "
http://en.wikipedia.org/wiki/10BASE2
QUESTION 37
How many IP address ranges are specified in RFC 1918?
A.
B.
C.
D.

1 in Class
2 in Class
4 in Class
1 in Class

A,
A,
A,
A,

2 in Class B, and 4 in Class C
4 in Class B, and 8 in Class C
8 in Class B, and 16 in Class C
16 in Class B, and 256 in Class C

Answer: D
Explanation:
http://tools.ietf.org/html/rfc1918
QUESTION 38
What is required to allow devices that are using RFC 1918 addresses to communicate over the
Internet?
A.
B.
C.
D.

A private to public VLAN must be defined on the Internet border device.
The Internet firewall must permit RFC 1918 addresses.
VLAN translation is required on the Internet border device.
Network address translation is required on the Internet border device.

Answer: D
Explanation:
"The majority of NATs map multiple private hosts to one publicly exposed IP address. In a typical
configuration, a local network uses one of the designated "private" IP address subnets (RFC
1918)"
http://en.wikipedia.org/wiki/Network_address_translation
QUESTION 39
What is the addressing format of IPv6?
A.
B.
C.
D.

48-bit
48-bit
64-bit
64-bit

dotted decimal
colon-delimited hexadecimal
dotted decimal
colon-delimited hexadecimal

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E. 128-bit dotted decimal
F. 128-bit colon-delimited hexadecimal
Answer: F
Explanation:
"IPv6 addresses are represented as eight groups of four hexadecimal digits separated by colons.
The length of an IPv6 address is 128 bits"
http://en.wikipedia.org/wiki/IPv6
QUESTION 40
Which statement describes the function of the OSI transport layer?
A. It segments data from the system of the sending host and reassembles the data into a data stream
on the system of the receiving host.
B. It provides the connectivity and path selection between two host systems that may be located on
geographically separated networks.
C. It defines how data is formatted for transmission and how access to the physical media is controlled.
D. It establishes, manages, and terminates sessions between two communicating hosts.
Answer: A
Explanation:
http://en.wikipedia.org/wiki/Transport_layer

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