Career Guidance for Tech Students

Stack memory stores local variables and function call frames with automatic allocation/deallocation (LIFO). Heap memory stores dynamically allocated data (malloc/new) that persists until explicitly freed. Stack is faster but limited in size; heap is flexible but requires manual memory management to avoid leaks.

O(log n) — each comparison eliminates half the remaining elements. Binary search requires a sorted array. For an array of 1 million elements, you need at most ~20 comparisons versus up to 1 million for linear search.

HTTPS wraps HTTP in TLS/SSL encryption. During the TLS handshake, the server presents a certificate verified by a Certificate Authority. All data — headers, cookies, body — is encrypted in transit, preventing eavesdropping and man-in-the-middle attacks. HTTP sends everything in plain text on port 80; HTTPS uses port 443.

Use the STAR method: Situation (context), Task (your responsibility), Action (specific steps you took), Result (outcome with metrics). Example: "Our team's API was timing out under load. I profiled queries, added Redis caching for frequent reads, and reduced response time from 2s to 200ms — handling 5× more concurrent users."

Align your answer with the company's growth path. Example: "In five years, I want to be a solid mid-level engineer who mentors juniors, owns features end-to-end, and contributes to architecture decisions. I'm excited about growing with a team that values continuous learning — which is why this role appeals to me."