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100+ Free Extreme Fabric (Fabric Connect) Practice Questions

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2026 Statistics

Key Facts: Extreme Fabric (Fabric Connect) Exam

75%

Passing Score

Extreme Networks (Extreme Academy)

3 years

Certification Validity

Extreme Networks

$395

Retake Fee per Attempt

Extreme Networks

ProctorU

Independent Proctor

Extreme Academy

MCQ + Lab

Two-Part Format

Extreme Networks

802.1aq SPB

Underlying Technology

IEEE / Extreme Fabric Connect

The Extreme Certified Professional - Extreme Fabric (Fabric Connect) credential is issued by Extreme Networks (Extreme Academy) and proctored by ProctorU. It is a two-part assessment: a multiple-choice knowledge exam (about an hour) requiring 75% to pass, followed by a practical lab. One attempt is usually included in the course fee, with retakes at $395, and the certification is valid for 3 years. Extreme does not publish a fixed question count or domain weighting; this free bank evenly covers four areas: Installation and Configuration, Advanced Configuration, Management, and Troubleshooting of SPB/IS-IS, I-SID, L2/L3 VSN, Fabric Attach, auto-sense, multicast, and CFM.

Sample Extreme Fabric (Fabric Connect) Practice Questions

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

1Extreme Fabric Connect is built on which IEEE standard for the network virtualization control plane?
A.IEEE 802.3ad Link Aggregation
B.IEEE 802.1Q VLAN tagging
C.IEEE 802.1aq Shortest Path Bridging (SPB)
D.IEEE 802.1D Spanning Tree Protocol
Explanation: Fabric Connect is Extreme's implementation of IEEE 802.1aq Shortest Path Bridging (SPB), specifically the MAC mode (SPBM). SPB replaces spanning tree with an IS-IS link-state control plane that computes shortest paths to every node, enabling an active-active multipath fabric.
2Which control-plane protocol does SPBM use to discover the topology and compute shortest paths between fabric nodes?
A.RIP
B.OSPF
C.BGP
D.IS-IS
Explanation: SPBM uses IS-IS as its link-state routing protocol. IS-IS advertises B-MAC reachability and I-SID membership across the fabric and computes the shortest path to every backbone node, populating the forwarding tables without spanning tree.
3In SPBM, what does the I-SID (Service Instance Identifier) primarily accomplish?
A.It sets the QoS DSCP marking for backbone traffic
B.It uniquely identifies a virtualized service instance independent of the underlying infrastructure
C.It assigns the IS-IS system ID to each backbone node
D.It defines the spanning-tree priority of an access port
Explanation: The I-SID is a 24-bit service identifier that separates a service from the infrastructure. Each L2 VSN, L3 VSN, or multicast stream is bound to an I-SID, so any node configured with the same I-SID participates in the same service network-wide.
4What encapsulation does SPBM use to forward customer frames across the backbone?
A.IEEE 802.1ah Provider Backbone Bridging (MAC-in-MAC)
B.GRE tunneling
C.VXLAN UDP encapsulation
D.MPLS label stacking
Explanation: SPBM uses IEEE 802.1ah Provider Backbone Bridging (PBB), commonly called MAC-in-MAC. The customer MAC (C-MAC) frame is encapsulated inside a backbone MAC (B-MAC) header with a B-MAC destination and source plus the I-SID, hiding customer addresses from the core.
5By default, which value becomes the SPBM B-MAC (backbone MAC) of a Fabric Connect switch?
A.The IS-IS area address
B.The management interface IP address
C.The chassis MAC address
D.A randomly generated multicast MAC
Explanation: By default the chassis MAC address becomes the node's B-MAC. While this works, Extreme recommends configuring an easy-to-recognize B-MAC so that fabric forwarding tables and troubleshooting output are readable. IS-IS computes the shortest path to every node's B-MAC.
6What is the correct format of an SPBM nickname?
A.A 32-bit dotted-decimal IP address
B.A 16-character hexadecimal string
C.A 48-bit MAC address such as 00:11:22:33:44:55
D.A dotted value in the form x.xx.xx (for example 2.34.56)
Explanation: The SPBM nickname uses the format x.xx.xx (for example 2.34.56). The nickname is a 20-bit value that uniquely identifies the node in the fabric and is used to build the per-source multicast forwarding state for IP multicast over Fabric Connect.
7What are B-VLANs (Backbone VLANs) used for in an SPBM fabric?
A.To provide out-of-band console access
B.To carry customer untagged management traffic
C.To act as the transport instances that carry encapsulated backbone traffic
D.To define the access ports for end-user devices
Explanation: B-VLANs are the SPBM transport instances. Fabric Connect uses two B-VLANs (commonly 4051 and 4052 by default) that carry the MAC-in-MAC encapsulated traffic. IS-IS automatically populates B-VLAN membership; ports are not added to a B-VLAN manually.
8How many B-VLANs does a standard Fabric Connect (SPBM) deployment use, and why?
A.Eight B-VLANs to match the eight QoS queues
B.One B-VLAN to keep configuration simple
C.Two B-VLANs to provide ECMP-style load distribution across equal-cost paths
D.Four B-VLANs, one per access switch
Explanation: SPBM typically uses two B-VLANs (for example 4051 and 4052). Using two transport instances lets the fabric distribute traffic across equal-cost shortest paths, providing load balancing and additional resiliency without spanning tree blocking links.
9In a Fabric Connect network, where must IS-IS adjacencies form to build the SPB core?
A.On the NNI core-facing links between fabric nodes
B.On the out-of-band management ports
C.Only on the seed node's loopback
D.On the UNI access ports facing end users
Explanation: SPB IS-IS interfaces are enabled on the NNI (network-to-network interface) core-facing links between fabric nodes. IS-IS adjacencies form across those links to discover the topology, while UNI ports face the customer edge and carry untagged or tagged service traffic.
10What is the default primary and secondary B-VLAN pair on Extreme Fabric Engine/VOSS switches?
A.VLAN 4051 and VLAN 4052
B.VLAN 100 and VLAN 200
C.VLAN 4094 and VLAN 4093
D.VLAN 1 and VLAN 2
Explanation: The default backbone VLANs used by SPBM are 4051 (primary) and 4052 (secondary). These reserved high VLAN IDs carry the MAC-in-MAC backbone traffic, and the two instances let the fabric load-balance across equal-cost paths.

About the Extreme Fabric (Fabric Connect) Exam

The Extreme Certified Professional - Extreme Fabric credential validates the skills to design, deploy, operate, and troubleshoot Extreme Fabric Connect, Extreme's implementation of IEEE 802.1aq Shortest Path Bridging in MAC mode (SPBM). Fabric Connect replaces spanning tree with an IS-IS link-state control plane and uses 802.1ah MAC-in-MAC encapsulation, with services identified by the 24-bit I-SID. Candidates configure SPBM and IS-IS on Fabric Engine/VOSS, build Layer 2 VSNs and Layer 3 VSNs (IP VPN), enable IP multicast over Fabric Connect, and extend services to the edge with Fabric Attach and auto-sense. The certification is a two-part process: a proctored multiple-choice knowledge exam followed by a practical lab assessment, and it remains valid for three years.

Assessment

Question count not published by the exam provider

Time Limit

Approximately 1 hour per knowledge exam, plus a separate practical lab session

Passing Score

75%

Exam Fee

Set by the Authorized Training Partner (one attempt typically included in the course); $395 per retake (Extreme Networks (Extreme Academy); proctored by ProctorU)

Extreme Fabric (Fabric Connect) Exam Content Outline

~25%

Installation and Configuration

Deploy the SPB core by enabling SPBM and IS-IS globally, configuring NNI interfaces, and setting nicknames (x.xx.xx), B-MAC, and the two B-VLANs (default 4051/4052). Understand BEB vs BCB roles, UNI vs NNI ports, and how to stand up basic Layer 2 VSN services on Fabric Engine/VOSS.

~25%

Advanced Configuration

Configure Layer 2 VSN and Layer 3 VSN (IP VPN over IS-IS using VRFs and I-SIDs), IP multicast over Fabric Connect (IGMP at the edge, IS-IS trees, data I-SIDs from 16,000,000), Fabric Attach (Server/Proxy/Client over LLDP), auto-sense ports, inter-VSN routing, and Fabric Extend across an IP or Layer 2 WAN.

~25%

Management

Provision and monitor fabric services, integrate with ExtremeCloud IQ Site Engine to visualize SPB topology and VSN membership, automate consistent service rollout across BEBs, and apply lifecycle practices such as configuration backup, version consistency, and change control.

~25%

Troubleshooting

Resolve IS-IS adjacency and MTU problems, verify B-MAC reachability and fabric paths, run CFM Layer 2 ping (LBM) and traceroute (LTM) using nodal MEPs on the B-VLAN, and fix Layer 2/Layer 3 VSN, Fabric Attach, nickname, and IP multicast over Fabric Connect faults.

How to Pass the Extreme Fabric (Fabric Connect) Exam

What You Need to Know

  • Passing score: 75%
  • Assessment: Question count not published by the exam provider
  • Time limit: Approximately 1 hour per knowledge exam, plus a separate practical lab session
  • Exam fee: Set by the Authorized Training Partner (one attempt typically included in the course); $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 Fabric (Fabric Connect) Study Tips from Top Performers

1Master the SPB fundamentals first: IS-IS as the control plane, the 24-bit I-SID separating service from infrastructure, 802.1ah MAC-in-MAC encapsulation, and the BEB versus BCB roles.
2Be fluent in core provisioning details: enable SPBM and IS-IS globally, configure NNI interfaces, set unique nicknames (x.xx.xx) and a readable B-MAC, and remember the default B-VLANs 4051 and 4052.
3Practice the service model end to end: map a C-VLAN to an I-SID for an L2 VSN, bind a VRF to an I-SID for an L3 VSN, and know that IS-IS distributes the L3 VSN routes across the fabric.
4Understand IP multicast over Fabric Connect: IGMP at the edge, IS-IS-built trees in the core (no PIM), the scope versus data I-SID distinction, and that data I-SIDs start at 16,000,000.
5Get comfortable with edge automation: Fabric Attach (Server/Proxy/Client signaling over LLDP) and auto-sense ports that self-provision based on what they detect, including enabling FA Server for connected devices.
6Drill troubleshooting workflow: verify IS-IS adjacencies and MTU, confirm B-MAC paths, then use CFM Layer 2 ping (LBM) and traceroute (LTM) with a nodal MEP on the B-VLAN to isolate service faults.

Frequently Asked Questions

What is the Extreme Fabric (Fabric Connect) certification?

It is the Extreme Certified Professional credential for Extreme Fabric Connect, Extreme's implementation of IEEE 802.1aq Shortest Path Bridging in MAC mode (SPBM). It validates deploying, operating, and troubleshooting an IS-IS-based Ethernet fabric with I-SID services on Fabric Engine/VOSS.

How is the exam structured and what score do I need to pass?

It is a two-part assessment: a proctored multiple-choice knowledge exam (about an hour) followed by a practical lab. You must reach 75% on the knowledge exam before registering for the lab, and the certification is valid for three years.

How much does the exam cost?

The exam fee is set by the Authorized Training Partner and one attempt is typically included in the related course fee. Additional attempts can be purchased at $395 each. Exams are independently proctored by ProctorU.

Does Extreme publish a fixed number of questions or domain weightings?

No. Extreme does not publish a fixed numeric question count or per-domain percentage weighting for this credential. Our free bank evenly covers four areas: Installation and Configuration, Advanced Configuration, Management, and Troubleshooting.

How is Fabric Connect different from EXOS campus switching?

Fabric Connect runs SPBM/IS-IS on Fabric Engine/VOSS to build a virtualized Layer 2/Layer 3 fabric using I-SIDs and MAC-in-MAC, while EXOS is Extreme's campus switching OS that typically joins the fabric as a Fabric Attach edge device rather than running the SPB core.

What technologies should I focus on most?

Concentrate on IS-IS, I-SID and MAC-in-MAC fundamentals, B-VLANs and nicknames, Layer 2 and Layer 3 VSNs, IP multicast over Fabric Connect, Fabric Attach and auto-sense, Fabric Extend, and CFM tools (Layer 2 ping and traceroute) for troubleshooting.