What topics does Grandstream test in interviews?

Commonly reported topics include Testing process, OSI vs TCP/IP, IPv4/IPv6 dual-stack testing, HTTPS and TLS handshake, HTTP/3 and QUIC, DNS troubleshooting.

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Grandstream interview questions

From 1 candidate account, updated Oct 12, 2026

Candidate accounts: 1
Rounds on average: 1
Rounds in every loop: 1

How the loop works

This guide draws on 1 first-hand interview account from Nowcoder. Candidates describe about 1 round on average, most often technical interviews.

These 1 writeup cover software engineering roles. All of them were posted under a forum handle, so we could not verify the authors’ identities.

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Interview experiences at Grandstream

Software Test Engineer

Outcome not shared

New grad. 1 round. Shared by 测开收割机 on nowcoder, 1970-01-01

1InterviewTechnicalNetworking-heavy test interview ending with how to test and debug voice-call software.Covered: Testing process, OSI vs TCP/IP, IPv4/IPv6 dual-stack testing, HTTPS and TLS handshake, HTTP/3 and QUIC, DNS troubleshooting, ARP spoofing, Subnet masks, No-network troubleshooting, VoIP call testing, One-way audio diagnosis

Grandstream interviews: FAQ

What is the interview process like at Grandstream?: This guide draws on 1 first-hand interview account from Nowcoder. Candidates describe about 1 round on average, most often technical interviews.
What topics does Grandstream test in interviews?: Commonly reported topics include Testing process, OSI vs TCP/IP, IPv4/IPv6 dual-stack testing, HTTPS and TLS handshake, HTTP/3 and QUIC, DNS troubleshooting.

These guides summarize public, first-hand interview experiences shared by candidates. They describe the shape of each loop and the topics that came up, not a leaked question bank, and every experience links back to its original source. Processes change often. Treat this as directional prep, not a script.