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2016 NEW Cisco 640-911: Introducing
Cisco Data Center Networking (DCICN)
Exam Questions and Answers
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QUESTION 41
Which transport protocol requires a three-way handshake to establish a new connection?
A.
B.
C.
D.

ARP
UDP
IP
TCP

Answer: D
Explanation:
"To establish a connection, TCP uses a three-way handshake."
http://en.wikipedia.org/wiki/Transmission_Control_Protoc ol
QUESTION 42
What is the subnet mask for the network 172.16.0.0/21?
A.
B.
C.
D.
E.
F.

255.255.0.0
255.255.255.240
255.255.248.0
255.255.255.248
255.255.248.240
255.255.255.0

Answer: C

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QUESTION 43
What is the dotted hexadecimal representation of the IP address 172.13.99.225?
A.
B.
C.
D.
E.

AC.0D.63.E1
AB.63.99.D5
E2.1D.E1.66
BC.0C.C3.1F
CC.0D.F3.21

Answer: A
QUESTION 44
What is the decimal value of the hexadecimal number 0x718?
A.
B.
C.
D.

718
1816
2907
3511

Answer: B
Explanation:
Decimal 1816
Binary 11100011000
Hexadecimal 0x718
Roman MDCCCXVI
Dotted decimal 0.0.7.24
QUESTION 54
Which three terms are used to describe data at Layers 1, 2, and 4 of the OSI model? (Choose
three.)
A.
B.
C.
D.
E.
F.

PDUs
bits
sequences
segments
packets
frames

Answer: BDF
Explanation:
Bits -1 layer
Frames - 2 layer
Segments - 4 layer
http://en.wikipedia.org/wiki/OSI_model
QUESTION 55
Which two layers of the OSI model are combined in the Internet protocol suite application layer?
(Choose two.)

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

2
3
4
5
6
7

Answer: DE
Explanation:
http://en.wikipedia.org/wiki/Internet_protoc ol_suite
QUESTION 56
Which two layers of the OSI model are combined in the Internet protocol suite network access
layer? (Choose two.)
A.
B.
C.
D.
E.
F.
G.

1
2
3
4
5
6
7

Answer: AB
Explanation:
http://en.wikipedia.org/wiki/Internet_protoc ol_suite
QUESTION 57
In an IEEE 802.3 Ethernet frame, what is the significance of the DSAP field?
A. The DSAP field specifies the TCP or UDP port that is associated with the transport protocol.
B. The DSAP field is only used on United States Department of Defense networks to indicate the
information classification level.
C. The DSAP field is only used in Ethernet II frames.
D. The DSAP field indicates the network layer protocol.
Answer: D
QUESTION 58
Which field in an Ethernet II frame performs the same function as the DSAP field in an 802.3
Ethernet frame?
A.
B.
C.
D.
E.

start of frame
EtherType
frame check sequence
Subnetwork Access Protocol
Logical Link Control

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Answer: B
QUESTION 59
Which option is an example of a distance vector routing protocol?
A.
B.
C.
D.

RIP
OSPF
ARP
IS-IS

Answer: A
Explanation:
http://en.wikipedia.org/wiki/Distance-vector_routing_protocol
"Examples of distance-vector routing protocols include RIPv1 and RIPv2 and IGRP." OSPF, IS -IS
- link-state routing protocols. ARP - address resolution protocol.
QUESTION 60
Which option is an example of an advanced distance vector routing protocol?
A.
B.
C.
D.

EIGRP
RIP
OSPF
ARP

Answer: A
Explanation:
http://en.wikipedia.org/wiki/Enhanced_Interior_Gateway_Routing_P rotocol
"The Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced communications
protocol that helps automate routing decisions on a computer network."

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