Disruption and Access-Oriented Threats for A+
Short answer
Disruption threats target service availability (DoS/DDoS) while access-oriented threats try to obtain credentials or intercept communications (brute-force, dictionary, evil twin, on-path). Technicians look for volume anomalies, repeated authentication failures, duplicate SSIDs, certificate warnings, or unexpected redirects as first indicators.
Why it appears on the exam
- Given access logs, determine whether failed attempts indicate brute-force or user error. - Identify the likely threat when multiple users report a duplicated SSID in the vicinity. - Choose appropriate first-response actions when a service outage might be a DoS attack.
Key concepts
Concept 1
Required terms
DoS (Denial of Service): An attack that exhausts resources on a target system or service to make it unavailable to legitimate users. DDoS (Distributed Denial of Service): A DoS attack originating from multiple compromised systems, amplifying traffic to overwhelm the target. brute-force attack: Attempting authentication by systematically trying all possible credentials or passwords until success. dictionary attack: A password attack using a curated list of common passwords or words rather than trying every possible combination.
Example
A web service becomes unresponsive during a traffic spike from thousands of unique IPs (DDoS).
Concept 2
How Disruption and Access-Oriented Threats works
Disruption threats target service availability (DoS/DDoS) while access-oriented threats try to obtain credentials or intercept communications (brute-force, dictionary, evil twin, on-path). Technicians look for volume anomalies, repeated authentication failures, duplicate SSIDs, certificate warnings, or unexpected redirects as first indicators.
Example
A user reports many failed login attempts and then lockout (brute-force or dictionary attack).
Concept 3
Common confusion
Technicians sometimes mistake legitimate traffic surges for DDoS, or confuse evil twin SSIDs with legitimate roaming networks. Distinguish by checking IP distributions, request patterns, and comparing BSSIDs/MACs or certificate chains.
Example
Employees connecting to office Wi-Fi are prompted for new credentials after a nearby network with identical SSID appears (evil twin).
Concept 4
Core 2 (220-1202) question cues
Given access logs, determine whether failed attempts indicate brute-force or user error; Identify the likely threat when multiple users report a duplicated SSID in the vicinity; Choose appropriate first-response actions when a service outage might be a DoS attack.
Example
Browsing shows certificate mismatch warnings and injected content between client and server (on-path attack).
Sample questions
Select an answer to reveal the explanation. For tracked practice and weak-area review, use the Cultiv8 app.
Q1.An A+ support scenario describes this situation: A web service becomes unresponsive during a traffic spike from thousands of unique IPs (DDoS). Which answer fits best?
Q2.For this A+ objective, the scenario says: A user reports many failed login attempts and then lockout (brute-force or dictionary attack). What is the best match?
Q3.A user reports this support situation: Employees connecting to office Wi-Fi are prompted for new credentials after a nearby network with identical SSID appears (evil twin). Which option should the technician choose?
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