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Network+ Exam

Take 2

October 29, 2025

  • #network+

Take 2

❌ Missed Q20

Scenario: Monitor all traffic at gateway + block content types.

Correct Answer: NIPS on internal + firewall on external

Why:

  • Firewall (external) = blocks malicious inbound traffic.
  • NIPS (internal) = inspects traffic, can block based on content/signatures.
  • NIDS = monitor only (no blocking).

Exam Tip:

Firewall = first line defense.

NIPS = inside protection + filtering.

❌ Missed Q25

Scenario: Adequate signal but intermittent connectivity + slow speeds.

Correct Answer: Signal degradation or loss

Why: Strength ≠ Quality. Noise, interference, or attenuation can corrupt frames.

Exam Tip:

Strong but noisy signal = retransmissions = slow speeds.

❌ Missed Q45

Flag to request TCP termination: FIN

  • FIN = graceful close (end of session).
  • RST = immediate abort/reset.
  • SYN = connection start.
  • ACK = acknowledgment.

Memory Trick:

FIN = Finished session, RST = Reset NOW.

❌ Missed Q53

Windows tool to check route to host: tracert

  • Windows = tracert
  • Linux/macOS = traceroute
  • ping = connectivity only
  • ip = interface mgmt on Linux

Exam Tip:

tracert = Windows | traceroute = Linux/macOS.

❌ Missed Q57

Wi-Fi with DFS + TPC (radar avoidance): 802.11h

  • Required in Europe + radar-sensitive regions.
  • DFS = Dynamic Frequency Selection.
  • TPC = Transmit Power Control.

Exam Tip:

Only 802.11h has regulatory compliance features.

❌ Missed Q77

Authorized person knowingly lets attacker in: Piggybacking

  • Piggybacking = intentional.
  • Tailgating = accidental (unaware).
  • Shoulder surfing = spying screens.
  • Phishing = fraudulent messages.

Memory Trick:

Piggybacking = permission | Tailgating = tricking.

❌ Missed Q83

Cable worked PC→PC but not PC→Switch: Crossover cable

  • Crossover = used to connect like devices (PC ↔ PC).
  • Straight-through = unlike devices (PC ↔ Switch).
  • Rollover/console = PC ↔ router console port.

Exam Tip:

PC ↔ Switch = Straight-through.

❌ Missed Q84

Protocol to avoid Layer 2 loops: 802.1d (Spanning Tree Protocol)

  • 802.1q = VLAN tagging.
  • RIPv2 = Layer 3 routing.
  • OSPF = Layer 3 link-state routing.

Memory Trick:

d = STP = Don’t loop.

❌ Missed Q87

Router repaired in 4 hours: MTTR (Mean Time To Repair)

  • MTTR = repair duration.
  • MTBF = avg time between failures.
  • RPO = max acceptable data loss.
  • RTO = time to restore service.

Exam Tip:

Repair time = MTTR.