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What does VXLAN stand for?
a. Virtual Extensible Local Area Network
b. Virtual Extended LAN
c. Virtual Exclusive Local Area Network
d. Virtual Enhanced LAN
Answer: a. Virtual Extensible Local Area Networklinkedin+1
What primary problem does VXLAN solve in cloud data centers?
a. Increases data storage
b. Extends Layer 2 networks over Layer 3 infrastructure
c. Improves CPU performance
d. Reduces power usage
Answer: b. Extends Layer 2 networks over Layer 3 infrastructurejuniper+1
What is the maximum number of VNIs supported in VXLAN?
a. 4096
b. 65536
c. 1 million
d. 16 million
Answer: d. 16 millionarista+1
VXLAN encapsulates Layer 2 Ethernet frames inside which type of Layer 4 packet?
a. TCP
b. UDP
c. ICMP
d. SCTP
Answer: b. UDPcycle+1
Which UDP port is the default for VXLAN encapsulated traffic?
a. 4787
b. 4788
c. 4789
d. 4889
Answer: c. 4789dumpsofficial+1
The entity responsible for VXLAN encapsulation and decapsulation is called what?
a. VNID
b. VTEP
c. VTP
d. VNI
Answer: b. VTEPlinkedin+1
The physical network over which VXLAN tunnels operate is known as what?
a. Overlay network
b. Underlay network
c. Hybrid network
d. Virtual network
Answer: b. Underlay networkcycle+1
Which field in VXLAN identifies a unique logical Layer 2 segment?
a. VLAN ID
b. VTEP Address
c. VNI
d. IP Address
Answer: c. VNIjuniper+1
VXLAN was jointly developed by VMware, Cisco, and which other company?
a. Intel
b. Juniper
c. Broadcom
d. Arista
Answer: a. Intelarista+1
In VXLAN, what does VTEP stand for?
a. Virtual Tunnel Endpoint
b. VXLAN Tunnel Endpoint
c. Virtual Transit Edge Point
d. VLAN Tunnel Encapsulator
Answer: b. VXLAN Tunnel Endpointlinkedin+1
VXLAN allows how many more virtual networks than traditional VLANs (802.1Q)?
a. 10 times
b. 100 times
c. 1000 times
d. 4000 times
Answer: c. 1000 times (16M vs 4K)arista+1
What is a key benefit of using VXLAN in multitenant cloud environments?
a. Inexpensive hardware
b. Network isolation and scalability
c. Low CPU usage
d. Long-distance wireless
Answer: b. Network isolation and scalabilityruijie+1
When is multicast used in VXLAN?
a. Never
b. To transport broadcast, unknown unicast, and multicast
c. For IPv6 only
d. Only for single tenant networks
Answer: b. To transport broadcast, unknown unicast, and multicastcycle+1
What can serve as a VTEP in a VXLAN deployment?
a. Only physical switches
b. Only hypervisors
c. Either physical or virtual devices
d. Only routers
Answer: c. Either physical or virtual devicesjuniper+1
Which protocol enhancements are used to control VXLAN BUM traffic besides multicast?
a. DNS
b. EVPN
c. OSPF
d. DHCP
Answer: b. EVPNcisco+1
VXLAN header adds how many bytes to the standard Ethernet frame?
a. 24
b. 30
c. 36
d. 50
Answer: d. 50arista
Which tunneling technology competes with VXLAN for overlay networking?
a. GRE
b. MPLS
c. VLAN
d. PPP
Answer: a. GREnakivo+1
What is the primary function of the underlay network in a VXLAN architecture?
a. Routing VTEP-to-VTEP traffic
b. Switching Layer 2 frames
c. Encryption
d. NAT
Answer: a. Routing VTEP-to-VTEP trafficcycle+1
Which term refers to a logical VXLAN segment?
a. VNF
b. VNI
c. VPC
d. VLAN
Answer: b. VNIlinkedin+1
How is VM mobility improved in data centers by VXLAN?
a. By increasing RAM
b. By removing VLAN limits
c. By allowing VMs to move across IP subnets
d. By reducing packet loss
Answer: c. By allowing VMs to move across IP subnetsarista+1
What is the main limitation of traditional VLANs in a large cloud environment?
a. Speed
b. Number of VLANs (4096)
c. Security
d. Cost
Answer: b. Number of VLANs (4096)linkedin+1
VXLAN is often leveraged in which type of cloud setup?
a. Public only
b. Private only
c. Hybrid and multi-tenant
d. Edge only
Answer: c. Hybrid and multi-tenantjuniper+1
Which cloud use case best benefits from VXLAN?
a. Large-scale VM deployment across multiple subnets
b. One host, one VM setups
c. Direct storage access
d. Bare-metal server hosting
Answer: a. Large-scale VM deployment across multiple subnetsarista+1
Which organization maintains the official VXLAN protocol standards?
a. IEEE
b. IETF
c. ISO
d. ITU
Answer: b. IETFlinkedin+1
VXLAN is most commonly used to create what type of networks in cloud computing?
a. Overlay networks
b. Underlay networks
c. Physical LANs
d. Local wireless networks
Answer: a. Overlay networkscbtnuggets+1
What is the function of the VXLAN Network Identifier (VNI)?
a. Assigns IP addresses
b. Segments Layer 2 domains
c. Encrypts traffic
d. Handles DNS
Answer: b. Segments Layer 2 domainsnakivo+1
What’s a common challenge addressed by VXLAN in modern data centers?
a. Reducing electricity use
b. Extending Layer 2 networks over Layer 3
c. Backing up VMs
d. Reducing physical switch count
Answer: b. Extending Layer 2 networks over Layer 3networklessons+1
VXLAN uses which header in the encapsulation process?
a. GRE
b. IP-in-IP
c. UDP
d. ICMP
Answer: c. UDPcycle+1
What layer does VXLAN operate at logically?
a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 2 over Layer 3
Answer: d. Layer 2 over Layer 3networklessons+1
VXLAN is compatible with which virtualization technology?
a. VMware only
b. OpenStack only
c. Multiple, including VMware, OpenStack, KVM
d. AWS only
Answer: c. Multiple, including VMware, OpenStack, KVMarista+1
In VXLAN, what ensures interoperability between vendors?
a. Open standards
b. Proprietary protocols
c. Manual configuration
d. Physical switches only
Answer: a. Open standardslinkedin+1
VXLAN BUM traffic is often replicated using?
a. Unicast replication
b. Broadcast storm
c. VLAN mirroring
d. Packet sniffing
Answer: a. Unicast replicationcycle+1
What hardware can be a VTEP in a VXLAN environment?
a. Server NIC
b. Router
c. Switch
d. All of the above
Answer: d. All of the abovejuniper+1
The VTEP maintains a mapping of which addresses?
a. IP to VNI
b. MAC to VNI
c. IP to MAC
d. VNI to VLAN
Answer: b. MAC to VNIcycle+1
VXLAN headers include which key field for each segment?
a. VLAN ID
b. VN Tag
c. VNI
d. IP Address
Answer: c. VNIcycle+1
What is an overlay network?
a. A physical network
b. A logical network built on top of the physical
c. Only for storage
d. A wireless mesh
Answer: b. A logical network built on top of the physicalnakivo+1
Which is NOT a benefit of VXLAN in cloud computing?
a. Greater scalability
b. Network segmentation
c. Physical cabling reduction
d. Improving Wi-Fi speed
Answer: d. Improving Wi-Fi speedjuniper+1
What is required in underlay networks for VXLAN to function at scale?
a. Unicode support
b. Sufficient IP routing
c. Wi-Fi 6 hardware
d. Fiber-only cables
Answer: b. Sufficient IP routinglinkedin+1
VXLAN tunnels allow resources to be logically grouped regardless of what?
a. IP subnet boundaries
b. VLAN id limits
c. Switch vendor
d. Router model
Answer: a. IP subnet boundariesjuniper+1
VXLAN improves cloud agility by enabling what feature?
a. vMotion across subnets
b. Higher encryption
c. Faster boot times
d. Longer passwords
Answer: a. vMotion across subnetsarista+1
What component is essential for VXLAN deployment on a hypervisor?
a. SCSI bus
b. Software VTEP
c. RAID controller
d. GPU
Answer: b. Software VTEPjuniper+1
Which layer does the VXLAN header reside after encapsulation?
a. Layer 4
b. Between Layer 3 and Layer 4
c. Layer 2
d. Above Layer 7
Answer: b. Between Layer 3 and Layer 4 (inside UDP)cycle+1
VXLAN is especially beneficial for which cloud use case?
a. Single tenant hosting
b. Large multi-tenant data centers
c. Wi-Fi hotspots
d. P2P backup
Answer: b. Large multi-tenant data centersruijie+1
VTEP communication over the underlay uses which addressing?
a. MAC only
b. Public IP
c. Unicast IP
d. ARP
Answer: c. Unicast IPlinkedin+1
To extend a VLAN over a WAN connection, which technology is preferred?
a. VXLAN
b. RADIUS
c. NAT
d. PPPoE
Answer: a. VXLANnakivo+1
What is one challenge in VXLAN deployment?
a. Lack of IPv6 support
b. MAC address table scaling
c. Only one VTEP per network
d. Incompatible with Ethernet
Answer: b. MAC address table scalingarista+1
VXLAN is often integrated with which advanced networking architecture?
a. SDN (Software-Defined Networking)
b. RIP
c. Frame relay
d. ISDN
Answer: a. SDN (Software-Defined Networking)rongpeng+1
Which is an example of a software VTEP?
a. Network switch
b. KVM hypervisor
c. Firewall
d. Database server
Answer: b. KVM hypervisorjuniper+1
Which statement about VXLAN is false?
a. Enables multi-tenant scaling
b. Can support 16 million logical networks
c. Only supports IPv4
d. Works with physical and virtual devices
Answer: c. Only supports IPv4linkedin+1
What fundamental advantage does VXLAN have over traditional VLAN?
a. More scalability and flexibility
b. Higher broadcast domains
c. Lower CPU overhead
d. Simpler addressing
Answer: a. More scalability and flexibilitynetworklessons+2

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