CSSLP ((ISC)² Certified Secure Software Lifecycle Professional) — Free Online Mock Test

CSSLP exam at a glance

CSSLP key facts & eligibility

Who is eligible for CSSLP?

At least four years of cumulative paid work experience in the software development lifecycle across the CSSLP domains (or three years with a relevant bachelor’s degree). Candidates without the experience can pass the exam and become an Associate of ISC2 while earning it.

Last verified July 2026 against ISC2 — CSSLP. Always confirm current details on the official website before you register.

CSSLP section breakdown

The CSSLP mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.

• CSSLP (60 Q)
  60 questions · 180 minutes · ~180 sec/question

CSSLP scoring & marking scheme

Strategy: CSSLP has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.

Scale: CSSLP (pass 700/1000).

How CSSLP is conducted

• Mode
  Proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow (face detection, room scan, fullscreen lock, tab-switch detection).
• Test format
  Linear / fixed-form — every candidate sees the same number of questions per section.
• Backtracking
  Allowed — you can revisit and change answers within a section.
• Mark for review
  Available — flag tough questions and return to them before submitting the section.

CSSLP time strategy

With 60 questions in 180 minutes, you have about 180 seconds per question on average. Successful candidates aim for the following pacing on each section:

• CSSLP (60 Q)
  Target ~180 sec/question. If a question takes more than 270 seconds, mark for review and move on.

Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.

CSSLP topics covered

Across the 50 Wrexa Edge variants of CSSLP, the following topics appear most often (sample distribution from one variant):

CSSLP (60 Q)

• D1 — Continuity · 4
• D2 — Classification · 3
• D2 — Destruction · 3
• D1 — Risk analysis · 2
• D1 — Ethics / Law · 2
• D1 — Law / IP · 2
• D1 — Privacy / Law · 2
• D1 — Governance · 2

CSSLP difficulty calibration

Elite tier. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months.

CSSLP · 125 Q in 180m. Secure software concepts, requirements, design, implementation/coding, testing, deployment & supply-chain security. Pass 700/1000. · Official language: English.

Verified content — Wrexa Edge's CSSLP bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).

How Wrexa Edge prepares you for CSSLP

• Real test-day interface
  Our cert skin mirrors the actual CSSLP testing software — same timer, palette, tools, and navigation.
• 50 distinct variants
  3000 unique practice questions, each variant a fresh test — not just shuffled options.
• Detailed analytics
  Scaled score, section accuracy, topic-wise heatmap, time-per-question — see where to focus after every attempt.
• Spaced repetition (Notebook)
  Wrong answers and flagged questions flow into an SM-2 spaced-repetition deck so you actually retain what you learn.
• Optional proctoring
  Browser-based face-api detection (no install) — turn it on to simulate real CSSLP test-day conditions.
• Free to start
  No credit card. Sign up, pick a variant, and your first CSSLP mock starts in under a minute.

Expert take: what CSSLP really tests

The Certified Secure Software Lifecycle Professional (CSSLP), from ISC2, validates the ability to build security into every phase of software development. It has 125 multiple-choice questions in 3 hours (a linear, revisitable format), scored on a 1000-point scale with a passing score of 700, across eight domains from secure software concepts through the software supply chain. It requires four years of relevant experience (or three with a degree), and runs on a three-year maintenance cycle.

CSSLP study plan

A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.

Where CSSLP can take you

A strong CSSLP result opens up these careers and higher-study paths:

• Secure-SDLC professional
  CSSLP validates the ability to build security into every phase of software development.
• 3-year maintenance
  Maintained with CPE credits and an annual maintenance fee.

Best books & official prep for CSSLP

• Official (ISC2) CSSLP guide — ISC2
  Covers the eight CSSLP domains.
• CSSLP practice tests — Various
  Aim above the scaled passing score of 700.

Official practice: Prepare from the official ISC2 CSSLP exam outline on isc2.org; target the scaled passing score of 700 across the eight secure-SDLC domains.

Previous-year papers: ISC2 publishes the exam outline; commercial practice tests are widely used.

Frequently asked questions

What is the CSSLP exam pattern?

(ISC)² Certified Secure Software Lifecycle Professional contains 60 questions across 1 section: CSSLP (60 Q). Total duration is 180 minutes (about 180 seconds per question).

Does CSSLP have negative marking?

No — CSSLP has no negative marking. Each correct answer is worth 1 mark, so attempt every question.

How is CSSLP scored?

Scaled score range: 100 to 1000. CSSLP (pass 700/1000).

How can I practise CSSLP online for free?

Wrexa Edge gives you 10 free full-length CSSLP mock tests — with instant scoring, detailed explanations and analytics — plus 40 more with Pro. Start practising in under a minute, no card required.

What is the difficulty level of CSSLP?

CSSLP is rated Elite difficulty on Wrexa Edge. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months. CSSLP · 125 Q in 180m. Secure software concepts, requirements, design, implementation/coding, testing, deployment & supply-chain security. Pass 700/1000. · Official language: English.

How long is the CSSLP exam?

CSSLP runs for 180 minutes total. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.

What topics are covered in CSSLP?

CSSLP is split into: CSSLP (60 Q). Each section is timed and weighted separately. CSSLP · 125 Q in 180m. Secure software concepts, requirements, design, implementation/coding, testing, deployment & supply-chain security. Pass 700/1000. · Official language: English.

What tools or aids are allowed during CSSLP?

No special tools are required. Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.

Is the CSSLP test adaptive?

No — CSSLP is a fixed-form (linear) test. Every candidate sees the same number of questions per section.

How many CSSLP mock tests does Wrexa Edge offer?

Wrexa Edge generates 50 distinct CSSLP variants — each with different question content, not just shuffled options — the first 10 free for everyone and 40 more with Pro. That's 3000 unique practice questions in the real test-day interface.

Is there a free CSSLP test series 2026?

Yes. The Wrexa Edge CSSLP test series for 2026 gives you 10 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.

Are CSSLP previous year question–style papers included?

Every CSSLP mock is modelled on the official exam pattern and the style of previous years' papers — the same 60-question structure, sections and marking — so your practice mirrors the real paper you'll sit.

Which is the best free CSSLP mock test online?

Wrexa Edge's CSSLP mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.

Can I take the CSSLP mock test on mobile?

Yes. CSSLP mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.

What is the CSSLP syllabus?

The CSSLP syllabus maps to its 1 section: CSSLP (60 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.

What is the eligibility for CSSLP?

Eligibility for CSSLP — age, qualification and number of attempts — is set by the official conducting body and can change each cycle, so always confirm the current official notification before applying. Wrexa Edge focuses on realistic CSSLP practice: 10 free full-length mocks in the exact exam pattern, ready whenever you are.

When is the CSSLP exam and how should I prepare?

Official CSSLP exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 10 free CSSLP mocks with instant scoring so you can track your readiness week by week.

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