Implementing Cisco Enterprise Network Core Technologies (ENCOR) v1.0 (350-401)

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Total 988 questions

What are two reasons why broadcast radiation is caused in the virtual machine environment? (Choose two.)

  • A. vSwitch must interrupt the server CPU to process the broadcast packet.
  • B. The Layer 2 domain can be large in virtual machine environments.
  • C. Virtual machines communicate primarily through broadcast mode.
  • D. Communication between vSwitch and network switch is broadcast based.
  • E. Communication between vSwitch and network switch is multicast based.


Answer : AB

Reference:
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/net_implementation_white_paper0900aecd806a9c05.html

Which two GRE features are configured to prevent fragmentation? (Choose two.)

  • A. TCP window size
  • B. IP MTU
  • C. TCP MSS
  • D. DF bit clear
  • E. MTU ignore


Answer : BC

Reference:
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/25885-pmtud-ipfrag.html

Which LISP device is responsible for publishing EID-to-RLOC mappings for a site?

  • A. ETR
  • B. MR
  • C. ITR
  • D. MS


Answer : A

Reference:
https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/locator-id-separation-protocol-lisp/white_paper_c11-652502.html

Refer to the exhibit.

Assuming that R1 is a CE router, which VRF is assigned to Gi0/0 on R1?

  • A. default VRF
  • B. VRF VPN_A
  • C. VRF VPN_B
  • D. management VRF


Answer : A

What are two benefits of virtualizing the server with the use of VMs in a data center environment? (Choose two.)

  • A. reduced rack space, power, and cooling requirements
  • B. smaller Layer 2 domain
  • C. increased security
  • D. speedy deployment
  • E. reduced IP and MAC address requirements


Answer : AD

Which statement about route targets is true when using VRF-Lite?

  • A. Route targets control the import and export of routes into a customer routing table.
  • B. When BGP is configured, route targets are transmitted as BGP standard communities.
  • C. Route targets allow customers to be assigned overlapping addresses.
  • D. Route targets uniquely identify the customer routing table.


Answer : A

Which LISP infrastructure device provides connectivity between non-LISP sites and LISP sites by receiving non-LISP traffic with a LISP site destination?

  • A. PITR
  • B. map resolver
  • C. map server
  • D. PETR


Answer : A

Reference:
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DCI/5-0/LISPmobility/DCI_LISP_Host_Mobility/LISPmobile_2.html

Which statement explains why Type 1 hypervisor is considered more efficient than Type2 hypervisor?

  • A. Type 1 hypervisor is the only type of hypervisor that supports hardware acceleration techniques.
  • B. Type 1 hypervisor relies on the existing OS of the host machine to access CPU, memory, storage, and network resources.
  • C. Type 1 hypervisor runs directly on the physical hardware of the host machine without relying on the underlying OS.
  • D. Type 1 hypervisor enables other operating systems to run on it.


Answer : C

Which statement about VXLAN is true?

  • A. VXLAN encapsulates a Layer 2 frame in an IP-UDP header, which allows Layer 2 adjacency across router boundaries.
  • B. VXLAN uses the Spanning Tree Protocol for loop prevention.
  • C. VXLAN extends the Layer 2 Segment ID field to 24-bits, which allows up to 4094 unique Layer 2 segments over the same network.
  • D. VXLAN uses TCP as the transport protocol over the physical data center network.


Answer : A

Which TCP setting is tuned to minimize the risk of fragmentation on a GRE/IP tunnel?

  • A. MSS
  • B. MTU
  • C. MRU
  • D. window size


Answer : A

Which statement describes the IP and MAC allocation requirements for virtual machines on Type 1 hypervisors?

  • A. Virtual machines do not require a unique IP or unique MAC. They share the IP and MAC address of the physical server.
  • B. Each virtual machine requires a unique IP address but shares the MAC address with the physical server.
  • C. Each virtual machine requires a unique IP and MAC addresses to be able to reach to other nodes.
  • D. Each virtual machine requires a unique MAC address but shares the IP address with the physical server.


Answer : C

Which two namespaces does the LISP network architecture and protocol use? (Choose two.)

  • A. TLOC
  • B. RLOC
  • C. DNS
  • D. VTEP
  • E. EID


Answer : BE

Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_lisp/configuration/xe-3s/irl-xe-3s-book/irl-overview.html

Which two entities are Type 1 hypervisors? (Choose two.)

  • A. Oracle VM VirtualBox
  • B. Microsoft Hyper-V
  • C. VMware server
  • D. VMware ESXi
  • E. Microsoft Virtual PC


Answer : BD

Reference:
https://phoenixnap.com/kb/what-is-hypervisor-type-1-2

DRAG DROP -
Drag and drop the LISP components from the left onto the functions they perform on the right. Not all options are used.
Select and Place:



Answer :

Reference:
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DCI/5-0/LISPmobility/DCI_LISP_Host_Mobility/LISPmobile_2.html#:~:text=%
E2%80%93%20Proxy%20ITR%20(PITR)%3A%20A,devices%20deployed%20at%20LISP%20sites.

Which action is a function of VTEP in VXLAN?

  • A. tunneling traffic from IPv6 to IPv4 VXLANs
  • B. allowing encrypted communication on the local VXLAN Ethernet segment
  • C. encapsulating and de-encapsulating VXLAN Ethernet frames
  • D. tunneling traffic from IPv4 to IPv6 VXLANs


Answer : C

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Total 988 questions