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Following questions and answers are all new published by Cisco Official Exam Center: http://www.lead2pass.com/640-911.html

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

QUESTION 84
What are two default user roles in Cisco Nexus Operating System? (Choose two.)

A.    Admin
B.    Network Operator
C.    Operator
D.    Storage Operator
E.    Root
F.    System Manager

Answer: AC

QUESTION 85
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

QUESTION 86
A customer wants to connect to their SAN via Fibre Channel.
Which two devices can be used to provide connectivity? (Choose two.)

A.    Cisco MDS 9148 Multilayer Fabric Switch
B.    Cisco Nexus 7010 Switch
C.    Cisco Nexus 5548UP Switch
D.    Cisco Catalyst 6509 Switch
E.    Cisco Nexus 2248TP GE Fabric Extender

Answer: AC

QUESTION 87
Which network device is used to identify and protect against unauthorized traffic and control access to legitimate business-critical data?

A.    Stateful firewall
B.    Stateless firewall
C.    Router
D.    Gateway
E.    Switch

Answer: A

QUESTION 88
Which two Cisco data center switches provide support for Virtual Extensible LAN and In-Service Software Upgrade and patching without any interruption in operation? (Choose two.)

A.    Cisco Nexus 9396PX Switch
B.    Cisco Nexus 5548 Switch
C.    Cisco Nexus 9508 Switch
D.    Cisco Nexus 6004 Switch
E.    Cisco Nexus 3064x Switch

Answer: AC

QUESTION 89
Which layer of the OSI model ensures that information sent from one system can be read by another system?

A.    application layer
B.    presentation layer
C.    session layer
D.    transport layer
E.    network layer
F.    data link layer
G.    physical layer

Answer: B

QUESTION 90
Which two options are groups of network protocols that are categorized into the following OSI layers: application, data link, network, and transport? (Choose two.)

A.    FTP, LLDP, GRE, BGP
B.    RDP, CDP, EIGRP, UDP
C.    SSH, LLDP, ICMP, TCP
D.    Telnet, ICMP, EIGRP, FTP

Answer: BC

QUESTION 91
Which Cisco data center switch can support a 4-RU physical space requirement and also support FEX, Layer 2 and Layer 3, converged FCoE, and up to ninety-six 40-Gigabit Ethernet ports?

A.    Cisco Nexus 5548 Switch
B.    Cisco Nexus 5010 Switch
C.    Cisco Nexus 1010 Switch
D.    Cisco Nexus 7004 Switch
E.    Cisco Nexus 6004 Switch

Answer: E

QUESTION 92
Which device can provide FCoE connectivity?

A.    Cisco 2901 Integrated Services Router
B.    Cisco Nexus 2224TP Fabric Extender
C.    Cisco Nexus 5548 Switch
D.    Cisco ASA 5510 Firewall

Answer: C

QUESTION 93
What are three characteristics of the Ethernet access method CSMA/CD? (Choose three.)

A.    It allows many stations access to the same wire.
B.    It provides segmentation of a LAN.
C.    It allows a transmitting station to detect activity on the wire.
D.    It allows for detection of collisions on the wire.
E.    It provides broadcast capability on the wire.

Answer: ACD

QUESTION 94
Which two MAC addresses are valid? (Choose two.)

A.    00:10:74:C9:CD:C0
B.    0010.CC71.4BF9.AE0E.AE0E
C.    00:10:F9:F9:CC:70:8D:80
D.    0010.E686.3ED4
E.    0010.68F7

Answer: AD

QUESTION 95
What are three important factors when configuring VTP on the Cisco Nexus switching platform? (Choose three.)

A.    VLAN 1 must be disabled on the trunk port in order for VTP to work properly.
B.    The VDC administrator or network administrator must enable VTP on the device.
C.    VTP is enabled on all trunk ports by default.
D.    It does not matter which VDC you are working in when you configure VTP on the Cisco Nexus 7000.
E.    For a device operating in VTP client mode, the password and domain name must be properly set.
F.    In VTP server mode, the device will store VLAN information in bootflash.
G.    Per device, VTP configuration is stored in a file named vtp.conf.
H.    VTP pruning can be used on Cisco NX-OS devices.

Answer: BFG

QUESTION 96
Which two statements about configuring VLANs on the Cisco Nexus 7000 platform are true? (Choose two.)

A.    Software updates are disruptive to VLANs.
B.    VLANs with the same number are unique to their VDC.
C.    VLAN licensing is required for use.
D.    To change VLAN information, the administrator must be at the switch (config) # prompt.
E.    The command copy running-config startup-config will save changes to the VLAN database.

Answer: BE

QUESTION 97
In Cisco NX-OS, which three options are possible spanning tree port types? (Choose three.)

A.    bridge
B.    network
C.    normal
D.    root
E.    edge
F.    fixed

Answer: BCE

QUESTION 98
Which two data center technologies are part of the IEEE 802.3 standard for Ethernet-based LANs? (Choose two.)

A.    40 Gb/s
B.    10 Gb/s
C.    WLAN
D.    Smart Grid

Answer: AB

QUESTION 99
What will cause a device to wait a random amount of time before trying to transmit again?

A.    signal drop or fade
B.    signal acknowledgment
C.    packet drop
D.    signal collision
E.    keep alive signal
F.    Ethernet silence tone

Answer: D

QUESTION 100
Which option includes the two devices that can be connected when a Cisco Fabric Extender Transceiver is used?

A.    Server to Cisco Nexus 2000 Series Fabric Extender
B.    Server to Cisco Nexus 5010 Switch
C.    Server to Cisco Nexus 5548 Switch
D.    Cisco Nexus 2000 Series Fabric Extender to Cisco Nexus 5500 Switch

Answer: D

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