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Incident Response · Question Set
IR Fundamentals interview questions for placements and exams.
Questions
14
Included in this set
Subject
Incident Response
Explore more sets
Difficulty
Mixed
Level of this set
Go through each question and its explanation. Use this set as a focused practice pack for Incident Response.
A security event is any observable occurrence, like a login attempt or system alert. A security incident is when an event leads to compromise, breach, or confirmed malicious activity.
For complete preparation, combine this set with full subject-wise practice for Incident Response. You can also explore other subjects and sets from the links below.
Popular tools include SIEMs like Splunk or QRadar, network monitors like Zeek, endpoint tools such as CrowdStrike, and forensics utilities like Volatility. Each tool collects evidence, correlates alerts, and helps analysts make data-driven decisions.
Incident Response (IR) is the structured process of identifying, investigating, and managing security incidents to reduce impact and restore normal operations. It ensures the organization reacts quickly and minimizes data or financial loss.
NIST outlines four key phases of incident response — Preparation, Detection and Analysis, Containment Eradication and Recovery, and Post-Incident Activity. Marketing is unrelated to the security process.
The goal of IR is not to eliminate every threat but to contain incidents, limit damage, and resume normal service as soon as possible. It focuses on coordination, communication, and controlled recovery.
A Computer Security Incident Response Team (CSIRT) is a specialized group responsible for managing and coordinating incident response across departments. They analyze alerts, investigate breaches, and recommend containment measures.
IOCs are digital clues such as IP addresses, hashes, or domain names that indicate possible intrusion or compromise. They help analysts detect and correlate suspicious activity early.
Playbooks standardize how to react to recurring incidents like phishing or ransomware. They ensure quick, consistent, and effective actions without confusion during real events.
MTTD shows how fast incidents are identified, while MTTR measures how quickly they’re resolved. Together, they reflect the maturity and responsiveness of an organization’s IR capability.
An IR plan defines who acts, how they act, and when they act during security breaches. Without it, response becomes chaotic, increasing downtime, data loss, and reputational damage. A good plan ensures speed, coordination, and accountability.
The core stages are: 1. Preparation – building tools, policies, and teams. 2. Identification – detecting and confirming incidents. 3. Containment – limiting the spread and damage. 4. Eradication – removing threats completely. 5. Recovery – restoring normal service. 6. Lessons Learned – reviewing and improving the process.
Typical roles include: • IR Manager – coordinates the response. • Analysts – investigate alerts and gather data. • Forensics Experts – collect and preserve evidence. • Communications Lead – handles internal and external updates. Clear role separation avoids delays and miscommunication.
Key challenges include alert fatigue, lack of trained staff, slow communication, incomplete logs, and unclear authority. Solving these needs better automation, defined procedures, and regular IR drills.
Effective IR communication avoids information leaks and panic. Only essential personnel should receive updates through encrypted or approved channels to protect sensitive details.