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200-901 Network Fundamentals Practice Question

In the TCP three-way handshake, which sequence of flags is exchanged to establish a connection?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

SYN, SYN-ACK, ACK

The TCP three-way handshake consists of SYN, SYN-ACK, ACK.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • SYN, ACK, SYN-ACK

    Why it's wrong here

    Order is incorrect.

  • ACK, SYN, SYN-ACK

    Why it's wrong here

    Incorrect order.

  • SYN-ACK, SYN, ACK

    Why it's wrong here

    Incorrect order.

  • SYN, SYN-ACK, ACK

    Why this is correct

    Correct sequence.

Visual reference

Client Server SYN (seq=100) SYN-ACK (seq=200, ack=101) ACK (ack=201) Connection established — data transfer begins

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.