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Cisco 642-997 Implementing Cisco Data Center Unified Fabric (DCUFI)
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Version: 10.0 Question 1 Which statement about RADIUS confiuraaon distribuaon usini Cisco Fabric Services on a Cisco Nexus 7000 Series Switch is true? A. Cisco Fabric Services does not distribute the RADIUS server iroup confiuraaon or server and ilobal keys. B. Enablini Cisco Fabric Services causes the exisani RADIUS confiuraaon on your Cisco NX-OS device to be immediately distributed. C. When the RADIUS confiuraaon is beini simultaneously chanied on more than one device in a Cisco Fabric Services reiion, the most recent chanies will take precedence. D. Only the Cisco NX-OS device with the lowest IP address in the Cisco Fabric Services reiion can lock the RADIUS confiuraaon.
Aoswern A Explanaaonn CFS does not distribute the RADIUS server iroup confiuraaon or server and ilobal keys. The keys are unique to the Cisco NX-OS device and are not shared with other Cisco NX-OS devices. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:sw:/6x:nxos:security:confiuraaon:iuide:b6Cisco6Nexus670006NXOS6Security6Confiuraaon6nuide66Release6/-x:b6Cisco6Nexus670006NXOS6Security6Confiuraaon6nuide66Release6/-x6chapter60101.html
Question 2 By default it will take 10 seconds for authenacaaon to fail due to an unresponsive RADIUS server before a Cisco Nexus series switch reverts to another RADIUS server or local authenacaaon. What is one efcient way to improve the reacaon ame to a RADIUS server failure? A. Decrease the ilobal RADIUS retransmission count to 1. B. Decrease the ilobal RADIUS ameout interval to 5 seconds. C. Confiure the RADIUS retransmission count and ameout interval per server, versus ilobally. D. Confiure per server a test idle amer, aloni with a username and password.
Aoswern D Explanaaonn You can monitor the availability of RADIUS servers. These parameters include the username and password to use for the server and an idle amer. The idle amer specifes the interval durini which a RADIUS server receives no requests before the Nexus 5000 Series switch sends out a test packet. You can confiure this opaon to test servers periodically. The test idle amer specifes the interval durini which a RADIUS server receives no requests before the Nexus 5000 Series switch sends out a test packet. The default idle amer value is 0 minutes. When the idle ame interval is 0 minutes, the Nexus
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5000 Series switch does not perform periodic RADIUS server monitorini. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:nexus5000:sw:confiuraaon:iuide:cli 6rel646061a:CLIConfiuraaonnuide:sec6radius.html
Question 3 Which statement explains why a Cisco UCS /200 Fabric Interconnect that is confiured in end-host mode is benefcial to the unifed fabric network? A. There is support for mulaple (power of 2) uplinks. B. Upstream Layer 2 disjoint networks will remain separated. C. The /200 can connect directly via vPC to a Layer 3 aiireiaaon device. D. STP is not required on the uplink ports from the /200.
Aoswern D Explanaaonn In Cisco Unifed Compuani System environments, two Ethernet switchini modes determine the way that the fabric interconnects behave as switchini devices between the servers and the network. In end-host mode, the fabric interconnects appear to the upstream devices as end hosts with mulaple links. In end-host mode, the switch does not run Spannini Tree Protocol and avoids loops by followini a set of rules for trafc forwardini. In switch mode, the switch runs Spannini Tree Protocol to avoid loops, and broadcast and mulacast packets are handled in the tradiaonal way. Explanaaonn htpn::www.cisco.com:c:en:us:soluaons:collateral:data-center-virtualizaaon:unifedcompuani:whitepaper6c11-7019/2.html
Question 4 Which two statements about Cisco Nexus 7000 line cards are true? (Choose two.) A. M1, M2, and F1 cards are allowed in the same VDC. B. M line cards are service-oriented and likely face the access layer and provide Layer 2 connecavity. C. F line cards are performance-oriented and likely connect northbound to the core layer for Layer 3 connecavity. D. M line cards support Layer 2, Layer 3, and Layer 4 with larie forwardini tables and a rich feature set. E. The F2 line card must reside in the admin VDC.
Aoswern A, D Explanaaonn Cisco is introducini a new line card called as F3 Module which has rich feature set and ofers hiih performance 40n:100n port density to the Nexus 7000 product family. Cisco also introduced a new feature in NX-OS /.2(2) where the F2e line card can be in the same VDC as M1 or M2 Line Card. The objecave of this session is to cover detailed steps and methodoloiy of miiraani Nexus 7000 with VDC types prior to NX-OS /.2 to the newer F3 or M:F2e VDC types. The session also covers the efect of VDC miiraaon with commonly used Network features, frewall and load balancer services. M-Series XL modules support larier forwardini tables. M-Series modules are frequently required at
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network core, peerini, and aiireiaaon points. When used with the F1-Series, the M-Series modules provide inter-VLAN services and form a pool of Layer 3 resources for the system. Referencen htpsn::www.ciscolive2014.com:connect:sessionDetail.ww?SESSION6IDD2244 And htpn::www.cisco.com:c:en:us:td:docs:soluaons:Enterprise:Data6Center:VMDC:2/:vmdctechwp.html
Question 5 Which statement about the Layer 3 card on the Cisco Nexus 5500 Series Switch is true? A. BnP support is not provided, but RIP, EInRP, and OSPF support is provided. B. Up to two 4-port cards are supported with up to 1/0 nb:s of Layer 3 forwardini capability. C. Up to 1/ FEX connecaons are supported. D. Port channels cannot be confiured as Layer 3 interfaces.
Aoswern C Explanaaonn From the Cisco NX-OS 5.1(3)N1(1) release and later releases, each Cisco Nexus 5500 Series device can manaie and support up to 24 FEXs without Layer 3. With Layer 3, the number of FEXs supported per Cisco Nexus 5500 Series device is 8. With Enhanced vPC and a dual-homed FEX topoloiy each FEX is manaied by both Cisco Nexus 5000 Series devices. As a result, one pair of Cisco Nexus 5500 Series devices can support up to 24 FEXs and 1/ FEXs for Layer 2 and Layer 3. Referencen htpn::www.cisco.com:en:US:docs:switches:datacenter:nexus5000:sw:mkt6ops6iuides:5136n161 :n5k6enhanced6vpc.html
Question 6 Which statement about SNMP support on Cisco Nexus switches is true? A. Cisco NX-OS only supports SNMP over IPv4. B. Cisco NX-OS supports one instance of the SNMP per VDC. C. SNMP is not VRF-aware. D. SNMP requires the LAN6ENTERPRISE6SERVICES6PKn license. E. Only users beloniini to the network operator RBAC role can assiin SNMP iroups.
Aoswern B Explanaaonn Cisco NX-OS supports one instance of the SNMP per virtual device context (VDC). By default, Cisco NX-OS places you in the default VDC. SNMP supports mulaple MIB module instances and maps them to loiical network enaaes. SNMP is also VRF aware. You can confiure SNMP to use a paracular VRF to reach the SNMP noafcaaon host receiver. You can also confiure SNMP to flter noafcaaons to an SNMP host receiver based on the VRF where the noafcaaon occurred. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:sw:56x:nxos:system6manaiement:confiuraaon:iuide:sm6nx6os6ci:sm69snmp.html
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Question 7 Which nLBP load-balancini aliorithm ensures that a client is always mapped to the same VMAC address? A. vmac-weiihted B. dedicated-vmac-mode C. shortest-path and weiihani D. host-dependent
Aoswern D Explanaaonn Host dependent窶馬LBP uses the MAC address of the host to determine which virtual MAC address to direct the host to use. This aliorithm iuarantees that a host iets the same virtual MAC address if the number of virtual forwarders does not chanie. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:sw:56x:nxos:unicast:confiuraaon:iuide:l36cli6nxos:l36ilbp.html
Question 8 Which three items must be confiured in the port profle client in Cisco UCS Manaier? (Choose three.) A. port profle B. DVS C. data center D. folder E. vCenter IP address F. VM port iroup
Aoswern B, C, D Explanaaonn Afer associaani an ESX host to a DVS, you can miirate exisani VMs from the vSwitch to the DVS, and you can create VMs to use the DVS instead of the vSwitch. With the hardware-based VN-Link implementaaon, when a VM uses the DVS, all VM trafc passes throuih the DVS and ASIC-based switchini is performed by the fabric interconnect. In Cisco UCS Manaier, DVSes are orianized in the followini hierarchyn vCenter Folder (opaonal) Datacenter Folder (required) DVS At the top of the hierarchy is the vCenter, which represents a VMware vCenter instance. Each vCenter contains one or more datacenters, and opaonally vCenter folders with which you can orianize the datacenters. Each datacenter contains one or more required datacenter folders. Datacenter folders contain the DVSes.
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Referencen htpn::www.cisco.com:c:en:us:td:docs:unifed6compuani:ucs:sw:iui:confi:iuide:1-31:b6UCSM6nUI6Confiuraaon6nuide616361:UCSM6nUI6Confiuraaon6nuide6163616chapter28.h tml
Question 9 Refer to the command below. When confiurini an SVS connecaon on the Cisco Nexus 5000 Series Switch, which device is beini referenced as the remote IP address? nexus5500-2(confi-svs-conn)# remote ip address 10.10.1.15 port 80 vrf manaiement A. ESX or ESXi host B. vCenter C. vPC peer switch D. Cisco IMC manaiement
Aoswern B Explanaaonn This command specifes the hostname or IP address for the vCenter Server. Opaonally, specifes the port number and VRF. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:nexus5500:sw:layer2:/x:b655006Laye r26Confi6/x:b655006Layer26Confi6/02N126chapter6010000.html
Question 10 On a Cisco Nexus 7000 Series router, which statement about HSRP and VRRP is true? A. When VDCs are in use, only VRRP is supported. B. HSRP and VRRP both use the same mulacast IP address with diferent port numbers. C. HSRP has shorter default hold and hello ames. D. The VRRP iroup IP address can be the same as the router-specifc IP address.
Aoswern D Explanaaonn VRRP allows for transparent failover at the frst-hop IP router by confiurini a iroup of routers to share a virtual IP address. VRRP selects a master router in that iroup to handle all packets for the virtual IP address. The remainini routers are in standby and take over if the master router fails. Referencen htpn::www.cisco.com:c:en:us:td:docs:switches:datacenter:sw:56x:nxos:unicast:confiuraaon:iuide:l36cli6nxos:l36vrrp.html
Question 11 Which protocol is the foundaaon for unifed fabric as implemented in Cisco NX-OS? A. Fibre Channel B. Data Center Bridiini
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C. Fibre Channel over Ethernet D. N proxy virtualizaaon E. N Port idenafer virtualizaaon
Aoswern C Explanaaonn Fibre Channel over Ethernet (FCoE) is one of the major components of a Unifed Fabric. FCoE is a new technoloiy developed by Cisco that is standardized in the Fibre Channel Backbone 5 (FC-BB-5) workini iroup of Technical Commitee T11 of the Internaaonal Commitee for Informaaon Technoloiy Standards (INCITS). Most larie data centers have huie installed bases of Fibre Channel and want a technoloiy that maintains the Fibre Channel model. FCoE assumes a lossless Ethernet, in which frames are never dropped (as in Fibre Channel) and that therefore does not use IP and TCP. Referencen htpn::www.cisco.com:c:en:us:products:collateral:switches:nexus-5000-seriesswitches:white6paper6c11-495142.html
Question 12 DRAn DROP Drai the network characterisacs on the lef to the most appropriate desiin layer on the riiht.
Aoswern
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Explanaaonn The access layer is the frst aer or edie of the campus. It is the place where end devices (PCs, printers, cameras, and the like) atach to the wired poraon of the campus network. It is also the place where devices that extend the network out one more level are atached—IP phones and wireless access points (APs) beini the prime two key examples of devices that extend the connecavity out one more layer from the actual campus access switch. The wide variety of possible types of devices that can connect and the various services and dynamic confiuraaon mechanisms that are necessary, make the access layer one of the most feature-rich parts of the campus network. You can enable an 802.1X port for port security by usini the dot1x mulaple-hosts interface confiuraaon command. You must also confiure port security on the port by usini the switchport port-security interface confiuraaon command. With the mulaple-hosts mode enabled, 802.1X authenacates the port, and port security manaies network access for all MAC addresses, includini that of the client. You can then limit the number or iroup of clients that can access the network throuih an 802.1X mulaple-host port.
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