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100+ Free Extreme Data Center (VOSS/VSP) Practice Questions

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2026 Statistics

Key Facts: Extreme Data Center (VOSS/VSP) Exam

75%

Passing Score

Extreme Networks Technical Training Data Sheet

~1 hour

Knowledge Exam Duration

Extreme Networks

$395

Retake Fee (USD)

Extreme Networks

3 years

Certification Validity

Extreme Academy

ProctorU

Exam Proctor

Extreme Networks

MCQ + Lab

Professional Assessment Format

Extreme Networks

The Extreme Networks Data Center (VOSS/VSP) exam is a proctored multiple-choice knowledge exam (passed at 75% or above) plus a practical lab, with about one hour for the knowledge exam and a 3-year certification validity. One attempt is included with the course fee; retakes cost $395. Content covers VOSS/VSP platform fundamentals, the VOSS CLI, SPBM/Fabric Connect (IS-IS, I-SID, L2/L3 VSN, IP Shortcuts, multicast), and data center design and troubleshooting with SMLT/vIST. Extreme does not publish a fixed question count or per-domain weighting.

Sample Extreme Data Center (VOSS/VSP) Practice Questions

Try these sample questions to test your Extreme Data Center (VOSS/VSP) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which operating system runs on the Extreme Networks VSP series switches that are positioned for data center Fabric Connect deployments?
A.ExtremeXOS (EXOS)
B.VSP Operating System Software (VOSS)
C.Boot Operating System Software (BOSS)
D.Cisco IOS-XE
Explanation: The Virtual Services Platform (VSP) family — VSP 4900, 7200, 7400, 8200, 8400, and 8600 — runs VOSS, the VSP Operating System Software. VOSS provides the native Shortest Path Bridging MAC (SPBM) Fabric Connect implementation used in Extreme data center designs.
2A network architect is selecting a high-density spine switch for a leaf-spine data center fabric that must support 100GbE uplinks and run VOSS. Which VSP platform is most appropriate?
A.VSP 7400
B.VSP 8600 only
C.ExtremeAccess Platform XA1400
D.ERS 4900
Explanation: The VSP 7400 is a fixed-form high-density VOSS switch offering 25/100GbE ports, making it a common choice for data center leaf and spine roles in Fabric Connect designs. It supports SPBM natively along with SMLT/vIST.
3Before SPB, SMLT, vIST, Fabric Extend, or VXLAN Gateway can be enabled on certain VOSS switches, what must be configured because these advanced features require loopback ports?
A.The 'router isis enable' command only
B.The boot config flag advanced-feature-bandwidth-reservation (Full Feature mode)
C.A static default route to the management gateway
D.Jumbo frames on all access ports
Explanation: On VOSS switches that need Full Feature mode, you set 'boot config flags advanced-feature-bandwidth-reservation [low | high]'. This reassigns some front-panel ports as internal loopback ports required for Fabric Extend, SPB, SMLT, vIST, VXLAN Gateway, and similar advanced features.
4In VOSS terminology, what does a Circuitless IP (CLIP) interface provide?
A.A physical out-of-band management Ethernet port
B.A loopback IP address that is always reachable and can be advertised via IS-IS
C.A spanning-tree root bridge priority value
D.A VLAN reserved for SPBM backbone traffic
Explanation: A CLIP (Circuitless IP) is a loopback IP interface on a VOSS switch. Because it is not tied to a physical port, it remains reachable as long as any path exists, and it is commonly advertised through IS-IS so the node can be managed from its loopback in large fabrics.
5Which statement about stacking is true for VOSS-based VSP switches in a data center cluster?
A.VSP switches stack into a single logical unit like EXOS Summit stacks
B.VSP switches do not stack; redundancy between two switches is achieved with vIST/SMLT
C.VSP switches require VSF stacking cables for redundancy
D.VSP switches only support redundancy through MSTP
Explanation: Unlike EXOS Summit stacking, VOSS VSP switches do not form a single stacked logical unit. Two VSP switches provide active-active redundancy by forming a vIST (virtual Inter-Switch Trunk) cluster and presenting SMLT links to downstream devices.
6On a VOSS switch, which feature is enabled with a base license and lets a node reach loopback (CLIP) IPs of other VSPs across the fabric using IS-IS without per-VRF segmentation?
A.Layer 3 VSN
B.IP Shortcuts
C.Fabric Attach
D.Private VLANs
Explanation: IP Shortcuts provide IP routing across the SPBM fabric within the Global Routing Table (GRT) and are available with the VOSS base license. After enabling 'spbm 1 ip enable' under router IS-IS and setting an ip-source-address, CLIP loopbacks are advertised and reachable fabric-wide.
7A VOSS administrator runs 'show mgmt interface' and sees an interface of TYPE 'OOB'. What does this represent?
A.A CLIP loopback advertised in IS-IS
B.The dedicated out-of-band physical management Ethernet port
C.An in-band VLAN management interface
D.A backbone VLAN used for SPBM
Explanation: In VOSS Segmented Management, an interface of type OOB is the dedicated out-of-band management Ethernet port, which is isolated from the data-plane ports and VLANs. VOSS also supports CLIP and VLAN management interface types alongside OOB.
8Which VOSS interactive setup script walks an administrator through configuring SPB Ethertype, the SPBM instance, primary and secondary B-VLANs, IS-IS system ID, nickname, and manual area?
A.run topology
B.run spbm
C.configure fabric wizard
D.spbm autoconfig
Explanation: The 'run spbm' script guides the administrator through optimal SPB setup, prompting for the SPB Ethertype, SPBM instance number, primary/secondary B-VLANs, IS-IS system-id, SPB nickname, and the manual area (commonly 49.0000). It temporarily flaps IS-IS/SPBM while applying the configuration.
9What is the function of the SPB nickname configured on a VOSS node (for example, 'spbm 1 nick-name 0.00.74')?
A.It sets the device hostname shown in the CLI prompt
B.It is a unique 20-bit SPSourceID identifying the SPBM node within the topology
C.It defines the management IP subnet mask
D.It selects which VLANs are tagged on uplinks
Explanation: The SPB nickname is a unique node identifier (SPSourceID) used by SPBM, advertised in IS-IS TLV 144. It uniquely identifies each backbone node so that multicast and service forwarding can reference the correct source within the fabric.
10Which privilege/access level allows the read-write-all (rwa) user on a VOSS switch to change passwords for all access levels?
A.read-only
B.layer1
C.read-write-all (rwa)
D.layer2
Explanation: On VOSS, only the read-write-all (rwa) user can change passwords for every access level using the 'cli password' command. Other levels such as read-only, layer1, and layer2 have restricted privileges and cannot manage all account passwords.

About the Extreme Data Center (VOSS/VSP) Exam

This Extreme Networks data center credential validates the ability to deploy and operate Virtual Services Platform (VSP) switches running the VSP Operating System Software (VOSS) in Fabric Connect data center environments. VOSS/VSP data-center content sits within the Extreme Fabric portfolio, and this track scopes specifically to VOSS specifics to stay distinct from the EXOS campus and generic fabric tracks. The blueprint centers on VSP platform fundamentals and licensing, the VOSS CLI (which differs from ExtremeXOS), Shortest Path Bridging MAC (SPBM) with IS-IS, I-SID-based L2 and L3 VSNs, IP Shortcuts, inter-VSN routing, multicast over Fabric Connect, and data center high availability using SMLT and vIST clusters. Extreme technical training exams are proctored by ProctorU, require 75% to pass, and the Professional certification adds a practical lab assessment.

Assessment

Question count not published by the exam provider

Time Limit

Approximately 1 hour for the knowledge exam, plus a separate practical lab assessment

Passing Score

75%

Exam Fee

Set by Authorized Training Partner (one attempt included with course fee); $395 per retake (Extreme Networks (Extreme Academy))

Extreme Data Center (VOSS/VSP) Exam Content Outline

~25%

VOSS/VSP platform fundamentals

Identify VSP hardware (VSP 4900/7200/7400/8200/8400/8600 and XA1400) and the VSP Operating System Software (VOSS); understand licensing, base-license IP Shortcuts, advanced-feature bandwidth reservation (Full Feature mode) and loopback ports, CLIP loopbacks, Segmented Management, and initial SPB setup with the run spbm script.

~25%

VOSS CLI and configuration

Navigate the hierarchical VOSS CLI (enable, configure terminal, interface and router isis contexts); create VLANs, enable 802.1Q encapsulation, build MLT/LACP, map VLANs to I-SIDs, assign VLAN IP interfaces, configure VRRP, and save config. Recognize how VOSS CLI differs from ExtremeXOS.

~25%

SPB/Fabric Connect in the data center

Explain SPBM with IS-IS, MAC-in-MAC (802.1ah), BEB and BCB roles, nicknames and system IDs, B-VLANs, I-SID services, L2 VSN and L3 VSN (TLV 144 and TLV 184), inter-VSN routing, IP Shortcuts, multicast over Fabric Connect, DvR, multi-area SPB, and leaf-spine data center topologies.

~25%

Data-center design and troubleshooting

Design high availability with SMLT and vIST clusters, RSMLT, and VRRP gateway redundancy; account for MTU with MAC-in-MAC overhead; and troubleshoot using the I-SID FDB, IS-IS adjacencies, SPBM CFM, and SPBM Layer 2 ping/traceroute for data center connectivity issues.

How to Pass the Extreme Data Center (VOSS/VSP) Exam

What You Need to Know

  • Passing score: 75%
  • Assessment: Question count not published by the exam provider
  • Time limit: Approximately 1 hour for the knowledge exam, plus a separate practical lab assessment
  • Exam fee: Set by Authorized Training Partner (one attempt included with course fee); $395 per retake

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Extreme Data Center (VOSS/VSP) Study Tips from Top Performers

1Master the VOSS CLI hierarchy: enable, configure terminal, interface vlan/GigabitEthernet, and router isis contexts. Practice VLAN creation (vlan create ... type ...), encapsulation dot1q, and vlan i-sid mapping, since the syntax differs from ExtremeXOS.
2Know SPBM building blocks cold: IS-IS control plane, MAC-in-MAC (802.1ah), BEB vs BCB roles, B-VLANs, nicknames, system IDs, and I-SIDs. Be able to explain TLV 144 (service/I-SID) and TLV 184 (L3 VSN routes).
3Distinguish L2 VSN (stretched VLAN via I-SID) from L3 VSN (per-VRF routing via I-SID) and IP Shortcuts (GRT routing over the fabric, available with the base license).
4Understand SMLT/vIST deeply: vIST runs over the fabric so no direct IST cable is needed, SMLT is used toward dual-homed edge/servers (not on core NNIs), and RSMLT protects routed traffic during failover.
5Watch MTU: SPBM MAC-in-MAC overhead means an L3 service link needs about 1594 bytes, the VOSS Fabric Extend default tunnel MTU is 1950, and MTU cannot be auto-discovered over IP. Insufficient MTU breaks IS-IS adjacency.
6Practice troubleshooting workflows: show isis adjacencies, the I-SID FDB (LOCAL vs REMOTE entries), show isis spbm, SPBM CFM, and SPBM Layer 2 ping/traceroute to isolate fabric connectivity problems.

Frequently Asked Questions

What format is the Extreme Networks data center (VOSS/VSP) exam?

It is a proctored multiple-choice knowledge exam administered through the Extreme Networks Learning Portal and proctored by ProctorU. For the Professional certification, candidates must pass this knowledge exam before attempting a separate hands-on practical lab assessment.

What score do I need to pass, and how long do I have?

Extreme Networks technical training exams are passed with a score of 75% or above, and candidates have roughly one hour to complete the knowledge exam. The practical lab is a separate, timed assessment.

How much does the exam cost?

One exam attempt is included with the standard course fee, which is set by the Authorized Training Partner. Additional retake attempts can be purchased for $395 USD each through the Extreme Networks Learning Portal.

How is VOSS different from ExtremeXOS for this exam?

VOSS runs on the VSP platforms and provides native SPBM Fabric Connect for data center and aggregation roles, using a hierarchical CLI (enable, configure terminal, router isis). ExtremeXOS targets campus switching with a different command structure, so VOSS CLI syntax is a key focus area.

What core data center technologies are tested?

Expect SPBM/Fabric Connect with IS-IS, I-SID-based L2 and L3 VSNs, IP Shortcuts, inter-VSN routing, multicast over Fabric Connect, and high availability using SMLT and vIST clusters on VSP switches such as the VSP 7400 and 8400.

How long is the certification valid?

Extreme Networks professional certifications are valid for 3 years. To recertify, candidates retake the current exam (and lab where applicable) or advance to a higher-level certification before expiration.