[Nov.-2016-New]Braindump2go CCNA 640-911 PDF Exam Dumps 220Q&As for 100% Passing 640-911 Exam[NQ73-NQ83]

2016/11 New CCNA Data Center 640-911 DCICN: Introducing Cisco Data Center Networking Exam Questions Updated Today!
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QUESTION 73
What is the acronym expansion of the UDLD feature of Cisco Nexus Operating System?

A.    UniDirectional Link Detection
B.    Unified Data Link Distribution
C.    Unified Data Loss Detection
D.    Unified Directional Link Distribution
E.    Unidirectional Data Loss Detection

Answer: A
Explanation:
“Unidirectional Link Detection (UDLD) is a data link layer protocol from Cisco Systems to monitor the physical configuration of the cables and detect unidirectional links.” http://en.wikipedia.org/wiki/Unidirectional_Link_Detection

QUESTION 74
What are four security features that are included in Cisco Nexus Operating System? (Choose four.)

A.    Cisco TrustSec
B.    IEEE 802.1Qau
C.    CoPP
D.    port security
E.    PIM
F.    SSL VPN
G.    IPsec VPN
H.    ACLs

Answer: ACDH
Explanation:
https://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/brochure_cisco_nexus_7000_series_security_features.pdf

QUESTION 75
Where does Cisco Nexus Operating System store the running configuration file?

A.    RAM
B.    flash
C.    bootflash
D.    volatile
E.    NVRAM

Answer: A

QUESTION 76
Which two networking devices operate at Layer 1 of the OSI model? (Choose two.)

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

Answer: AE
Explanation:
It defines the electrical and physical specifications of the data connection. It defines the relationship between a device and a physical transmission medium (e.g. a copper or fiber optical cable). This includes the layout of pins, voltages, line impedance, cable specifications, signal timing, hubs, repeaters, network adapters, host bus adapters (HBA used in storage area networks) and more.”
http://en.wikipedia.org/wiki/OSI_model

QUESTION 77
Which two networking devices forward data based on destination MAC address? (Choose two.)

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

Answer: BC
Explanation:
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/white_paper_c11-465436.html

QUESTION 78
Which two network topologies are the most popular in switching? (Choose two.)

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

Answer: CD
Explanation:
http://en.wikipedia.org/wiki/Network_topology

QUESTION 79
Which device would you select to partition a network into VLANs?

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

Answer: C

QUESTION 80
At which layer of the OSI model does TCP operate?

A.    1
B.    2
C.    3
D.    4
E.    5

Answer: D
Explanation:
http://en.wikipedia.org/wiki/OSI_model

QUESTION 81
Which two layers of the OSI model relate to the transmission of bits over the wire and packet forwarding based on destination IP address? (Choose two.)

A.    1
B.    2
C.    3
D.    4
E.    5

Answer: AC
Explanation:
Bits – 1 layer
Packets – 3 layer
http://en.wikipedia.org/wiki/OSI_model

QUESTION 82
Which layer of the OSI model is associated with the reliable transmission of datagrams?

A.    datagram
B.    routing
C.    network
D.    data link
E.    transport
F.    transmission
G.    session

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

QUESTION 83
What are three modular Layer 3 processes in Cisco Nexus Operating System? (Choose three.)

A.    UDLD
B.    PIM
C.    HSRP
D.    STP
E.    OSPF
F.    Cisco Discovery Protocol

Answer: BCE


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