640-911 Dumps 640-911 Exam Questions 640-911 PDF 640-911 VCE Cisco

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November 1, 2016

2016/11 New CCNA Data Center 640-911 DCICN: Introducing Cisco Data Center Networking Exam Questions Updated Today!
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QUESTION 31
Which device forwards data based on the destination IP address?

A.    repeater
B.    bridge
C.    switch
D.    router
E.    hub

Answer: D

QUESTION 32
Which network topology is most closely associated with classical CSMA/CD?

A.    bus
B.    token passing bus
C.    star
D.    extended star
E.    ring

Answer: A

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

A.    bus
B.    token passing bus
C.    star
D.    extended star
E.    ring

Answer: E
Explanation:
http://en.wikipedia.org/wiki/Fiber_Distributed_Data_Interface

QUESTION 34
Which layer of the OSI model is associated with Token Ring Media Access Control?

A.    datagram
B.    routing
C.    network
D.    data link
E.    transport
F.    transmission
G.    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.    AUI
B.    UTP
C.    STP
D.    BNC
E.    RJ-11
F.    RJ-45
G.    ST
H.    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?

A.    100 meters
B.    100 feet
C.    150 meters
D.    150 feet
E.    185 meters
F.    185 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.    1 in Class A, 2 in Class B, and 4 in Class C
B.    2 in Class A, 4 in Class B, and 8 in Class C
C.    4 in Class A, 8 in Class B, and 16 in Class C
D.    1 in Class A, 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.    A private to public VLAN must be defined on the Internet border device.
B.    The Internet firewall must permit RFC 1918 addresses.
C.    VLAN translation is required on the Internet border device.
D.    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.    48-bit dotted decimal
B.    48-bit colon-delimited hexadecimal
C.    64-bit dotted decimal
D.    64-bit colon-delimited hexadecimal
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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