Ensurepass

QUESTION 21

Which statement about RBAC user roles on a Cisco Nexus switch is true?

 

A.

If you belong to multiple roles, you can execute only the commands that are permitted by both roles (logical AND).

B.

Access to a command takes priority over being denied access to a command.

C.

The predefined roles can only be changed by the network administrator (superuser).

D.

The default SAN administrator role restricts configuration to Fibre Channel interfaces.

E.

On a Cisco Nexus 7000 Series Switch, roles are shared between VDCs.

 

Correct Answer: B

Explanation:

If you belong to multiple roles, you can execute a combination of all the commands permitted by these roles. Access to a command takes priority over being denied access to a command. For example, suppose a user has RoleA, which denied access to the configuration commands. However, the users also have RoleB, which has access to the configuration commands. In this case, the users have access to the configuration commands.

 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guid e/cli/CLIConfigurationGuide/sec_rbac.html

 

 

QUESTION 22

The Connectivity Management Processor monitors the active supervisor module on a Cisco Nexus 7000 switch and will reboot the device in the event of a lights-out management issue. However, which option includes features that provide similar benefits in the absence of the Connectivity Management Processor?

 

A.

high-availability functionality from features such as vPC and NSF

B.

traditional system connectivity models like SNMP, GUI, or SSH

C.

Cisco FabricPath

D.

VDC failover

 

Correct Answer: A

Explanation:

vPC uses the vPC peer-keepalive link to run hello messages that are used to detect a dual- active scenario. A Gigabit Ethernet port can be used to carry the peer-keepalive messages. A dedicated VRF is recommended to isolate these control messages from common data packets. When an out-of-band network infrastructure is present, the management interfaces of the Cisco Nexus 7000 supervisor could be also used to carry keep-alive connectivity using the dedicated management VRF. When the vPC peer-link is no longer detected, a dual-active situation occurs, and the system disables all vPC port channel member on the “secondary” vPC peer (lower vPC role priority value). Also SVI interfaces associated to a vPC VLAN are suspended on the secondary switch. As a result, in this condition only the “primary” vPC peer actively forwards traffic on the vPC VLANs. Multiple peer-keepalive links can be used to increase resiliency of the dual-active detection mechanism.

 

Both the Cisco Catalyst 6500 and the Cisco Nexus 7000 offer a variety of high-availability features. Some of the primary features to highlight are In Service Software Upgrade (ISSU), Stateful Switchover (SSO), and Nonstop Forwarding (NSF). The operation and the behavior of these features are unique to the respective platform and can be independently executed without affecting the interoperability between the two platforms.

 

Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/white_paper_c11_589890.html

 

 

QUESTION 23

Which Cisco Nexus feature is best managed with DCNM-SAN?

 

A.

VSS

B.

domain parameters

C.

virtual switches

D.

AAA

 

Correct Answer: B

Explanation:

The Fibre Channel domain (fcdomain) feature performs principal switch selection, domain ID distribution, FC ID allocation, and fabric reconfiguration functions as described in the FC-SW-2 standards. The domains are configured on a per VSAN basis. If you do not configure a domain ID, the local switch uses a random ID.

This section describes each fcdomain phase:

 

clip_image002

clip_image004Principal switch selection — This phase guarantees the selection of a unique principal

clip_image004[1]Domain ID distribution — This phase guarantees each switch in the fabric obtains a unique domain ID.

clip_image004[2]FC ID allocation — This phase guarantees a unique FC ID assignment to each device attached to the corresponding switch in the fabric.

clip_image004[3]Fabric reconfiguration — This phase guarantees a resynchronization of all switches in the fabric to ensure they simultaneously restart a new principal switch selection phase.

 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_2/configuration/g uides/sysmgnt/DCNM-SAN/sysmgmt_dcnm/sysmgmt_overview.html#wp1051962

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 24

DRAG DROP

Drag the description on the left to the most appropriate Nexus product on the right.

 

clip_image006

 

Correct Answer:

clip_image008

 

 

QUESTION 25

Which of the following Cisco Nexus features is best managed with DCNM-LAN?

 

A.

VSS

B.

Domain parameters

C.

Virtual switches

D.

AAA

 

Correct Answer: C

Explanation:

DCNM-LAN supports the following platforms:

 

clip_image004[4]Cisco Nexus 1000V switches

clip_image004[5]Cisco Nexus 2000 Fabric Extenders

clip_image004[6]Cisco Nexus 3000 Series switches

clip_image004[7]Cisco Nexus 4000 Series switches

clip_image004[8]Cisco Nexus 5000 Series switches

 

Catalyst 6500

DCNM-LAN provides limited support for the Catalyst 6500 Series switches that runs classic IOS version 12.2(33)SXI or higher.

DCNM-LAN supports the viewing of the current configuration attributes of the device.

DCNM-LAN does not support changing the configuration of the device.

DCNM-LAN supports the Firewall Service Module (FWSM) version 4.0 or higher for the Catalyst 6500 Series switches.

Cisco Nexus 7000 Series switches

 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_2/configuration/g uides/fund/DCNM-SAN-LAN_5_2/DCNM_Fundamentals/fund_overview.html

 

 

QUESTION 26

Which option is a restriction of the unified ports on the Cisco UCS 6200 Series Fabric Interconnect when connecting to the unified fabric network?

 

A.

Direct FC connections are not supported to Cisco MDS switches

B.

The FCoE or Fibre Channel port allocations must be contiguous on the 6200.

C.

10-G Fibre Channel ports only use SFP+ interfaces.

D.

vPC is not supported on the Ethernet ports.

 

Correct Answer: B

Explanation:

When you configure the links between the Cisco UCS 2200 Series FEX and a Cisco UCS 6200 series fabric interconnect in fabric port channel mode, the available VIF namespace on the adapter varies depending on where the FEX uplinks are connected to the fabric interconnect ports.

Inside the 6248 fabric interconnect there are six sets of eight contiguous ports, with each set of ports managed by a single chip. When uplinks are connected such that all of the uplinks from an FEX are connected to a set of ports managed by a single chip, Cisco UCS Manager maximizes the number of VIFs used in service profiles deployed on the blades in the chassis. If uplink connections from an IOM are distributed across ports managed by separate chips, the VIF count is decreased.

 

Reference: http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/hw/6200-install-guide/6200_HIG/6200_HIG_chapter_01.html

 

 

QUESTION 27

Which function does the graceful restart feature allow a Cisco Nexus 7000 Series router to perform?

 

A.

Perform a rapid route convergence.

B.

Initialize a standby supervisor transparently when one is present.

C.

Remain in the data forwarding path through a process restart.

D.

Maintain a management connection throughout a router restart.

 

Correct Answer: C

Explanation:

Graceful Restart and Non Stop Routing both allow for the forwarding of data packets to continue along known routes while the routing protocol information is being restored (in the case of Graceful Restart) or refreshed (in the case of Non Stop Routing) following a processor switchover. When Graceful Restart is used, peer networking devices are informed, via protocol extensions prior to the event, of the SSO capable routers ability to perform graceful restart. The peer device must have the ability to understand this messaging. When a switchover occurs, the peer will continue to forward to the switching over router as instructed by the GR process for each particular protocol, even though in most cases the peering relationship needs to be rebuilt. Essentially, the peer router will give the switching over router a “grace” period to re-establish the neighbor relationship, while continuing to forward to the routes from that peer.

 

Reference: http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/high-availability/solution_overview_c22-487228.html

 

 

QUESTION 28

Which topology is not supported w
hen using vPC?

 

A.

a single-homed server to a single FEX that is connected to two Cisco Nexus 5500 Series Switches

B.

a dual-homed server to two FEXs, each connected to two Cisco Nexus 5500 Series Switches

C.

a dual-homed server to two FEXs that are connected to one Cisco Nexus 5500 Series Switch

D.

a dual-homed server to a single FEX that is connected to two Cisco Nexus 5500 Series Switches

 

Correct Answer: C

Explanation:

The figure shows unsupported topology where a vPC is between hosts and two FEXs that are connected to one Cisco Nexus 5500 Series device. This topology does not provide a good high availability solution because the server loses the connectivity to the network when the Cisco Nexus 5000 Series device fails.

 

Figure: Unsupported Topology–Host vPC With One Cisco Nexus 5000 Series Device

 

clip_image010

 

If you need to connect a multi-homing server to a pair of FEXs when there is only one Cisco Nexus 5000 Series device, you have the option to run active or standby NIC teaming from the server.

 

Reference: http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/mkt_ops_guides/513_n1_1/n5k_enhanced_vpc.html

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 29

Refer to the exhibit. Which corrective action is taken to resolve the problem?

 

clip_image012

 

A.

Trunk four VLANs on interface ethernet 199/1/1.

B.

Use the shut and no shut interface ethernet 199/1/1so that the VLANs come up.

C.

Place interface ethernet 199/1/1 in VLAN 4 in the N5K-2 configuration.

D.

Prune all but four VLANs from vPC 199.

E.

Add VLAN 4 to vPC 199.

 

Correct Answer: C

Explanation:

Place interface e
thernet 199/1/1 in VLAN 4 in the N5K-2 configuration.

 

 

QUESTION 30

Which SCSI terminology is used to describe source and destination nodes?

 

A.

hosts and targets

B.

initiators and targets

C.

HBA and disks

D.

initiators and disks

E.

HBA and targets

 

Correct Answer: B

Explanation:

In computer data storage, a SCSI initiator is the endpoint that initiates a SCSI session, that is, sends a SCSI command. The initiator usually does not provide any Logical Unit Numbers (LUNs).

On the other hand, a SCSI target is the endpoint that does not initiate sessions, but instead waits for initiators’ commands and provides required input/output data transfers. The target usually provides to the initiators one or more LUNs, because otherwise no read or write command would be possible.

 

Reference: http://en.wikipedia.org/wiki/SCSI_initiator_and_target

 

Free VCE & PDF File for Cisco 642-997 Real Exam

Instant Access to Free VCE Files: CCNA | CCNP | CCIE …
Instant Access to Free PDF Files: CCNA | CCNP | CCIE …

Comments are closed.