Cisco Implementing Cisco Collaboration Core Technologies (350‑801 CLCOR) Practice Exams
About the Cisco 350-801 CLCOR exam
Exam at a glance
Professional tier. The Core exam for both CCNP Collaboration and CCIE Collaboration written. 90–110 questions, 120 minutes, scaled passing score, $400 USD. Valid 3 years plus CE-credit recertification.
Dual role: CCNP and CCIE
350-801 CLCOR is uniquely positioned in Cisco's Collaboration track. It satisfies two paths simultaneously:
- CCNP Collaboration = CLCOR + one Concentration exam (e.g. 300-815 CLACC for advanced call control and mobility, 300-820 CLHCT for Webex hybrid and cloud, 300-830 CLCCE for cloud contact center).
- CCIE Collaboration written — pass CLCOR, then book the 8-hour lab within 3 years.
Passing 350-801 on its own also earns the standalone Cisco Certified Specialist - Collaboration Core badge, so the exam delivers a credential even before you complete a full track.
Domain weighting
- Infrastructure and Design — 15%
- Protocols and Endpoints — 10%
- On-Premises Call Control — 30%
- Voice Gateways and Session Border Controllers — 10%
- Cloud and Hybrid Services — 25%
- Media and QoS — 10%
Prerequisites
No formal prerequisites — Cisco removed the CCNA requirement for CCNP-level exams. Cisco recommends three to five years of hands-on Cisco collaboration experience. Most successful candidates hold a current CCNA (200-301) and have spent two-plus years configuring CUCM, Unity Connection, IM and Presence, voice gateways, or Webex deployments in production.
Why take this certification
- Single test, two career tracks. CLCOR satisfies both CCNP Collaboration and the CCIE Collaboration written. It is the most leveraged exam in Cisco's portfolio for unified-communications and voice engineers.
- Senior-engineer credential. CCNP Collaboration is a long-standing benchmark for unified-communications job descriptions and signals real production-grade CUCM, voice gateway, and Webex hybrid ability.
- Gateway to CCIE Collaboration. Passing 350-801 starts the 3-year clock for the CCIE Collaboration lab — Cisco's highest-tier expert credential on the Collaboration track.
- CE-credit value. CLCOR is worth 40 Continuing Education credits, which can keep your other Cisco professional certifications current without sitting another full exam.
What you'll learn in the 350-801 CLCOR exam
CLCOR is deliberately broad — Cisco wants senior engineers who can speak fluently across infrastructure, signalling protocols, gateways, call control, QoS, and the collaboration application stack. Most questions are scenario-driven, often presenting partial dial-plan configurations, show-command output from CUCM or a voice gateway, or topology diagrams.
Collaboration infrastructure
- CUCM cluster architecture — publisher / subscriber roles, intra-cluster communication, replication, redundancy groups.
- IM and Presence (IM&P) — Jabber sign-in flow, XCP routing, presence federation.
- Cisco Unity Connection — voicemail integration with CUCM, SCCP vs SIP integrations.
- Cisco Webex Edge — Webex Calling and hybrid services that bridge on-prem CUCM with cloud Webex.
Protocols, codecs, and endpoints
- SIP, H.323, and MGCP at concept level — signalling flow, REGISTER vs INVITE, gateway control plane.
- Codecs — G.711 (uncompressed PCM, ~64 kbps), G.722 (HD wideband), G.729 (low-bandwidth ~8 kbps), OPUS (variable-bitrate, modern apps).
- Endpoint registration — SIP REGISTER lifecycle, SCCP legacy phones, Webex endpoint onboarding.
- Bandwidth math for a call across a WAN, codec selection trade-offs, and transcoding decisions.
Voice gateways and session border controllers
- Cisco Unified Border Element (CUBE) — SIP-to-SIP session border control, codec normalisation, SIP trunk to a service provider.
- Voice gateway concepts — dial-peers (POTS vs VoIP), DTMF relay, fax pass-through and T.38.
- Media resources — Media Termination Point (MTP), Conference Bridge (CFB), Music on Hold (MoH) configuration on IOS XE.
On-premises call control (largest domain — 30%)
- CUCM call routing — call-flow internals, route lists, route groups, hunt pilots.
- Dial plans — partitions, calling search spaces (CSS), route patterns, translation patterns, transformation masks.
- Class-of-service design using partitions and CSS to enforce calling restrictions.
- Globalised E.164 dialling, +E.164 vs Variable-Length On-Net, localized route patterns.
- Time-of-day routing, forced authorization codes, call park / pickup / intercept.
QoS for voice and video
- DSCP marking — EF for voice bearer (RTP), AF41 for video, CS3 for call-control signalling.
- Low-latency queuing (LLQ) and class-based weighted fair queuing (CBWFQ) on the WAN edge.
- RTP / RTCP mechanics — payload formats, jitter, packet loss, MOS scoring basics.
- Trust boundaries — where the campus edge re-marks vs trusts endpoint markings.
Collaboration applications
- Unity Connection voicemail — message storage, message waiting indicators (MWI), single-inbox with Exchange.
- IM and Presence chat — Jabber on desktop and mobile, persistent chat, file transfer policies.
- Webex App — messaging, meetings, calling within a single client; sign-in to Webex Calling vs Webex Meetings.
- Webex Calling — cloud calling architecture, dedicated instance vs multi-tenant, integration with on-prem CUCM via Webex Edge.
Cloud and hybrid services (25%)
- Webex Calling — cloud calling architecture, dedicated instance vs multi-tenant, locations, numbers, and PSTN options (local gateway, cloud-connected PSTN).
- Cloud-Connected UC and Webex Edge — connecting on-premises CUCM to the Webex cloud for analytics, calling, and devices.
- Hybrid services — Hybrid Calendar, Directory Connector, and migrating users from on-premises to Webex Control Hub.
- Control Hub administration — organization, users, and service activation for the Webex Suite. The 2026 v2.0 blueprint raised this domain to 25%, reflecting the shift to hybrid collaboration.
How the practice exams help
Each free question and every premium exam mirrors the scenario-driven format Cisco uses — partial CUCM configs, dial-plan context, multi-step routing reasoning. Detailed explanations cover not just why the right answer is right but why the distractors are wrong, so you learn the protocol trade-offs (SIP vs H.323, G.711 vs G.729, partition vs CSS) rather than memorising answers.
How to prepare for the 350-801 CLCOR exam
CLCOR is a wide exam, so successful preparation balances book study with deliberate hands-on lab time on real or virtualized CUCM, Unity Connection, and IOS XE voice gateways. Recommended approach for someone holding a current CCNA with two-plus years of Cisco collaboration production experience:
- Study the six domains (6–10 weeks). Work through the official Cisco 350-801 exam topics domain by domain. The Cisco Press CCNP and CCIE Collaboration Core CLCOR 350-801 Official Cert Guide is the canonical text. Focus extra time on On-Premises Call Control (30%) and Cloud and Hybrid Services (25%) — together they carry over half the exam.
- Hands-on labs (4–8 weeks, in parallel). Use Cisco dCloud Collaboration labs for ready-built CUCM / Unity Connection / IM&P / CUBE pods — they are free with a Cisco Learning Network account and run the production product versions. Build a small dial-plan lab end to end: site partitions, CSS, route patterns, translation patterns, and a SIP trunk to a CUBE acting as a service-provider gateway.
- Webex week (1–2 weeks). If your day job is on-prem CUCM only, dedicate a focused week to Webex Calling, Webex Edge, and Webex App. dCloud also runs hybrid-services pods showing CUCM ↔ Webex Calling integration — exactly the surface area CLCOR tests on the cloud side.
- Practice exams (2–3 weeks). Take timed full-length tests and review every wrong answer with the explanation. Aim for consistent 85%+ before scheduling — the scaled passing score is unpublished, so over-shoot the bar.
Recommended timeline
16–24 weeks of focused study (10–15 hours per week) for current CCNA holders with two-plus years hands-on Cisco collaboration experience. Add 4–6 weeks for engineers without recent CUCM dial-plan or Webex hybrid exposure.
Official resources
Start with the official Cisco 350-801 CLCOR exam topics page on the Cisco Learning Network. Pair the Cisco Press CCNP and CCIE Collaboration Core CLCOR 350-801 Official Cert Guide with Cisco dCloud Collaboration labs for hands-on practice on CUCM, Unity Connection, IM and Presence, CUBE, and Webex hybrid pods without owning hardware.
Frequently asked questions
Are these actual exam questions?
No. All Nex Arc Cisco 350-801 CLCOR practice questions are original content based on the provider's published exam blueprint, official documentation, and real-world scenarios across every topic the exam covers. We do not offer brain dumps, leaked questions, or actual exam content. Using or distributing real exam questions violates certification provider agreements and can result in certification revocation.
How many questions are in the Cisco 350-801 CLCOR exam?
Cisco does not publish an exact question count for the 350-801 CLCOR exam, but candidates typically report 90 to 110 questions delivered in 120 minutes. Item types include multiple choice, multiple response, drag-and-drop, and simlets / testlets. Once you move past a question Cisco does not let you go back, so commit to each answer before clicking next.
What's the 350-801 CLCOR passing score?
Cisco does not publish a fixed passing score for 350-801. Scoring is scaled and the cut score is set by Cisco using statistical analysis of item difficulty. Aim for consistent 85%+ on full-length practice tests with detailed explanations — that gives a comfortable safety margin against the unknown scaled cut.
How do I access the full 350-801 CLCOR practice exam?
Click the Buy Now button in the sidebar to purchase the complete Cisco 350-801 CLCOR course. After payment you get instant access to 10 practice exams with detailed explanations on every option, and lifetime access to updates.
What are the prerequisites for the 350-801 CLCOR exam?
There are no formal prerequisites — Cisco removed the CCNA requirement for CCNP-level exams several years ago. That said, Cisco recommends three to five years of hands-on experience implementing enterprise collaboration solutions before attempting CLCOR. Most successful candidates hold a current CCNA (200-301) and have spent at least two years working with Cisco Unified Communications Manager (CUCM), Unity Connection, IM and Presence, or Webex deployments in production.
How long is the 350-801 CLCOR certification valid?
Passing 350-801 grants the Cisco Certified Specialist - Collaboration Core badge plus the Core component toward CCNP Collaboration / CCIE Collaboration — all valid for three years. You can recertify by retaking 350-801, passing a higher-level Cisco exam, or earning Continuing Education (CE) credits through Cisco's CE program. CLCOR is worth 40 CE credits when used to recertify other Cisco professional-level certifications.
What's the exam cost and can I retake it if I fail?
The 350-801 CLCOR exam costs $400 USD (plus local taxes), delivered through Pearson VUE at testing centres or via online proctoring. If you fail, Cisco enforces a five-day waiting period before your next attempt, and after four failed attempts you must wait six months. Each retake is full price — Cisco does not offer fail-and-retake discount vouchers. Practice thoroughly before your first attempt.
What does CLCOR cover and what topics are most heavily tested?
CLCOR is the broad Core exam covering six domains: Infrastructure and Design (~20%), Protocols, Codecs, and Endpoints (~20%), Cisco IOS XE Gateway and Media Resources (~15%), Call Control (~25%), QoS (~10%), and Collaboration Applications (~10%). Call Control is the single largest domain — expect heavy emphasis on CUCM call routing, dial plans, partitions and calling search spaces, route patterns and translation patterns, and globalised E.164 dialling. Infrastructure and Protocols together are ~40% — CUCM cluster architecture, Cisco Unified Border Element (CUBE), SIP / H.323 / MGCP signalling, codecs (G.711, G.722, G.729, OPUS), and endpoint registration show up frequently.
Does 350-801 CLCOR give me CCNP Collaboration on its own?
No — CCNP Collaboration requires passing two exams: the 350-801 CLCOR Core plus one Concentration exam of your choice (e.g. 300-815 CLACC for advanced call control and mobility, 300-820 CLHCT for cloud / Webex hybrid deployments, or 300-825 CLCNF for conferencing). Passing just 350-801 still earns you the standalone Cisco Certified Specialist - Collaboration Core badge, so the exam delivers value even if you delay the Concentration.
How does 350-801 CLCOR relate to the CCIE Collaboration certification?
350-801 CLCOR serves a dual role: it is also the qualifying written exam for CCIE Collaboration. After passing 350-801 you have three years to schedule and pass the 8-hour CCIE Collaboration lab exam. The lab books up months in advance and costs $1,600 USD per attempt, so most candidates use the CCNP Collaboration path (CLCOR + Concentration) as a credentialed checkpoint while preparing for the lab.