Assessment tips
- Confirm the current Cisco pattern from the drive mail before practising old papers
- Finish one problem or section fully before starting the next
- Revise the fundamentals listed in the round table on this page
Cisco Interview Experience 2026
Overview
How Cisco fresher interviews actually run, synthesized from recent campus candidate reports and Cisco public hiring guidance. We reorganized rounds, added prep notes, and flagged cycle-to-cycle variance - treat this as a prep map, not a script.
Cisco’s campus loop pairs an online test with two technical rounds that dig into networking and OS depth alongside DSA, then closes with HR. Patterns shift by year, campus, and role, so treat this as a prep map rather than a script. Glassdoor’s aggregate rating for the process sits around 68.8% positive with a difficulty score near 3 out of 5 - moderately hard, not brutal.
Eligibility (from student reports): 7.0+ CGPA, 70%+ in class 10 and 12, no active backlogs.
Fresher package ballpark (from student reports): ₹20-30 LPA. Confirm on your own offer letter.
Round-wise process
| Round | Duration | What it tests |
|---|---|---|
| Online Assessment (“Code with Cisco” test) | 60-90 min | 30-40 MCQs (OS, DBMS, computer networks, OOP) + 2 DSA problems |
| Technical Round 1 | 45-60 min | DSA problem-solving + detailed project/resume discussion |
| Technical Round 2 | 45-60 min | Networking and CS-fundamentals depth; basic system design for some tracks |
| HR / Managerial | 30-45 min | Motivation, culture fit, relocation, logistics |
Real interview experiences
Experience 1: on-campus 2024 - a rejection, and why it is worth reading
Published GeeksforGeeks write-up. Included precisely because it did not end in an offer: it shows where the bar actually sat.
Round 1: online coding and aptitude assessment.
Round 2: technical interview (45-60 min, online)
- Calculate the different types of IP addresses available for a given network.
- Explain the OSI layers, and how the OSI model differs from the TCP/IP model.
- Distinguish between a router, a hub and a switch.
- Differentiate DNS and DHCP, and explain each with an example.
- Coding: determine whether two strings are equal using only bitwise operators.
- Resume and project discussion.
Result: Not selected - the candidate did not progress to HR.
What it demonstrates: the interview was almost entirely networking, with the one coding question deliberately constrained to bitwise operators. Candidates who treat Cisco as a generic DSA company prepare for the wrong interview.
Takeaways
- What decided it: Networking depth (and a constrained bitwise coding ask) decided the loop - generic DSA prep did not match the panel
- Common fail: Treating Cisco as a pure LeetCode company and skipping OSI/IP/DNS fundamentals
- How to practise: Alternate DSA mediums with networking flashcards; practise explaining why an approach works under time pressure
Experience 2: the recurring on-campus pattern
Consolidated from several published campus write-ups across recent cycles rather than presented as one person’s story, because the round counts and durations differ noticeably by campus.
- The written round is a heavy MCQ filter. One reported drive: 50 questions in 60 minutes, split roughly 20 aptitude / 30 technical, with about 330 candidates sitting and roughly 170 progressing. Other cycles pair MCQs with two coding problems.
- Technical MCQs and interview questions repeat across years. Frequently reported: TCP/IP model layers, router vs switch, VLANs, process vs thread, paging, semaphore vs mutex, memory layout of a C program, tricky pointer-based input/output questions, and linked-list problems.
- Projects get discussed twice. Multiple accounts say the project came up in both the technical round and the technical-plus-management round, so know every line of your resume rather than one rehearsed summary.
- The later rounds are short. A technical + management round of around 20 minutes and an HR round of around 10 minutes are commonly reported - concise, not a formality, but not a grilling either.
- HR questions are predictable: why Cisco, what is your field of interest, which designation or team would you prefer.
- Glassdoor’s aggregate for the process sits near 3 out of 5 on difficulty with a clear majority describing the experience positively - moderately hard, and generally civil.
Sources for this section
- Cisco Interview Experience (On-Campus) 2024 - GeeksforGeeks
- Cisco Interview Experience, Software Engineer Profile (On-Campus) - GeeksforGeeks
- Cisco Interview Experience Set 14 (On-Campus) - GeeksforGeeks
- Cisco Interview Experience for Internship (2024) - GeeksforGeeks
Takeaways
- What decided it: Campus patterns still reward clear networking + CS fundamentals more than puzzle grind alone
- Common fail: Memorising definitions without being able to compare protocols or walk a packet path
- How to practise: Rebuild a one-page CN/OS cheat sheet and teach it aloud; keep one DSA medium warm daily
Experience 3: Code with Cisco - intern + FTE pipeline (2025)
Consolidated from public Code with Cisco write-ups (HackerRank OA → national hackathon shortlist → Webex interview pool). Timelines vary; one selected candidate reported ~47 days between final round and offer mail.
Phase 1 - Online assessment (HackerRank): ~40 MCQs plus two DSA problems (arrays/strings, standard mediums). Networking and CS fundamentals MCQs sit beside coding - treating OA as “coding only” is a common rejection pattern.
Phase 2 - Code-A-Thon (top national finalists): Multi-day hackathon at Cisco’s Bengaluru campus for shortlisted performers; strong hackathon work can influence fast-track interest but does not replace technical scrutiny.
Phase 3 - Interview day (Webex, eliminatory each round):
- Technical (~45 min): OOP, DBMS, computer networks, OS, SQL, then one DSA problem with reasoning probes (not definition recitation).
- Managerial (~15–20 min): Mix of arrays/stacks, CN, databases, plus behavioural prompts on communication and decisions.
- Emerging Talent / offer discussion (some cycles): Package breakdown, relocation, joining formalities for candidates who clear prior rounds.
Result: Selected for Intern + FTE Software Engineer (Grade band varies by cycle).
Takeaways
- What decided it: Reason about why an approach works; panels explicitly test explanation quality, not only final code.
- Common fail: Correct code without explaining why it works
- How to practise: Narrate approach quality; refresh networking fundamentals for role fit
Experience 4: off-campus networking-heavy rejection (still useful)
Same GFG 2024 on-campus story as Experience 1, reframed for prep: if your resume says “software engineer” but you skip bitwise/string constraints, IP addressing, and DNS vs DHCP comparisons, Cisco’s second technical round will feel unfamiliar compared with product-only companies. Budget half your prep time for networks + OS, half for DSA mediums.
Takeaways
- What decided it: Role framing on the resume must match networking-heavy second rounds (bitwise, IP, DNS vs DHCP)
- Common fail: Skipping constrained coding rules (e.g. bitwise-only) and protocol comparison questions
- How to practise: Solve string/bit problems under stated constraints; quiz yourself on DNS vs DHCP and addressing
Pre-interview checklist (Cisco)
- Confirm platform (HackerRank vs Cisco portal) and whether Code with Cisco branding applies
- Revise OSI/TCP-IP, DHCP/DORA, DNS resolution, switch vs router vs hub, VLAN basics
- Prepare one project deep-dive (stack, hardest bug, what you would rebuild)
- Three STAR stories plus a specific Why Cisco? with one product or team name
- Timed practice: sliding window, linked-list reversal, BFS level-order, graph cycle detection
- HR: relocation (Bengaluru / Pune / Hyderabad), notice period, learning goals for year one
Questions that come up often
Coding / technical
- Reverse a linked list (iteratively and in groups of k)
- Detect a cycle in a linked list or directed graph
- Binary tree level-order traversal (BFS)
- String manipulation: reverse a string, check for anagrams/permutations
- Detailed project discussion - architecture, hardest bug, what you would change
Networking fundamentals
- Explain the OSI model and what each layer does
- TCP vs UDP - differences and when to use each
- What happens when you type a URL into a browser?
- DNS and DHCP - what they do and how they work
- Difference between a switch, a hub, and a router
HR / behavioural
- Why Cisco, and what do you know about its products and culture?
- How would you maximise learning over an internship or first year?
- Describe a conflict with a teammate and how you resolved it
- Are you open to relocation, and what is your notice period?
Practical tips for Cisco
- Clear the online test first. Timed DSA practice beats last-minute topic hopping.
- Revise computer networks properly - OSI layers, DNS, DHCP, TCP/UDP - since Cisco tests this more than a typical software-only company.
- OS fundamentals (process scheduling, deadlocks, memory management) and basic DBMS still open a lot of panels. Do not skip them.
- Keep one crisp project narrative ready, and be willing to connect it to networking concepts if it genuinely applies.
- If you do not know something, say so and outline how you would find out rather than guessing.
HR interview
After the technical rounds, Cisco closes with a short HR/managerial conversation covering motivation, relocation, notice period, and a couple of behavioural questions. Prepare those answers on the dedicated page rather than cramming them into this hub.
Sample answers for high-frequency questions
Use these as frames, not scripts - interviewers probe follow-ups.
Q. Explain the OSI model and which protocol lives at each layer
A. The OSI model has seven layers: Physical (cables, signalling), Data Link (MAC addressing, framing, switches - Ethernet, ARP), Network (logical addressing and routing - IP, ICMP, routers), Transport (end-to-end delivery - TCP, UDP), Session (connection management), Presentation (encryption and encoding - TLS, JPEG), and Application (HTTP, DNS, SMTP, FTP). The practical TCP/IP model collapses these into four: Link, Internet, Transport and Application. The distinction Cisco interviewers push on is Layer 2 versus Layer 3: a switch forwards frames using MAC addresses within a single broadcast domain, while a router forwards packets using IP addresses between networks and separates broadcast domains.
Q. What is the difference between a hub, a switch and a router?
A. A hub is a Layer 1 device that simply repeats every incoming signal out of all other ports, so all devices share one collision domain and one broadcast domain - it is effectively obsolete. A switch is a Layer 2 device that learns MAC addresses into a CAM table and forwards a frame only out of the port where the destination lives, giving every port its own collision domain while keeping one broadcast domain per VLAN. A router is a Layer 3 device that forwards between different IP networks using a routing table, and it does not forward broadcasts, so each interface is a separate broadcast domain. The follow-up is usually VLANs - they let one physical switch host multiple broadcast domains, and traffic between VLANs still needs a router or a Layer 3 switch.
Q. Explain TCP versus UDP and the three-way handshake
A. TCP is connection-oriented and reliable: it numbers bytes, acknowledges them, retransmits losses, reorders segments, and applies flow control through a receive window plus congestion control through slow start and congestion avoidance. UDP is connectionless with just ports and a checksum, an 8-byte header against TCP’s 20-byte minimum, and no delivery guarantee. The three-way handshake establishes a TCP connection: the client sends SYN with its initial sequence number, the server replies SYN-ACK with its own sequence number and an acknowledgement, and the client sends a final ACK - after which data flows. Teardown takes four segments using FIN and ACK in each direction, and the closing side sits in TIME_WAIT for twice the maximum segment lifetime so stray duplicate segments cannot corrupt a new connection on the same port pair.
Q. What happens when you type a URL into a browser?
A. The browser first checks its own cache, then the OS cache and hosts file, then queries DNS - the resolver walks from root to TLD to authoritative nameserver unless a cached answer short-circuits it - returning an IP address. With the IP, the OS uses ARP to find the MAC address of the next hop (the default gateway if the destination is off-subnet), then opens a TCP connection with the three-way handshake, and for HTTPS follows with a TLS handshake that authenticates the server certificate and agrees on a session key. The browser sends an HTTP GET, the server responds with status, headers and HTML, and the browser parses it into the DOM, fetching CSS, JavaScript and images as sub-resources before rendering. Cisco interviewers usually stop you to go deeper at one specific hop - most often DNS resolution or the routing decision at Layer 3.
Q. How does DHCP assign an IP address?
A. DHCP uses a four-message exchange remembered as DORA. The client broadcasts a DHCPDISCOVER because it has no address yet, a server replies with DHCPOFFER containing a candidate IP, the client broadcasts DHCPREQUEST to formally accept one offer (broadcast so other servers know their offers were declined), and the server confirms with DHCPACK. The lease carries not just the address but the subnet mask, default gateway, DNS servers and a lease duration, and the client tries to renew at 50 percent of the lease via unicast. Since DISCOVER is a broadcast and routers do not forward broadcasts, a client on a different subnet from its DHCP server needs a DHCP relay agent, configured on Cisco routers with the ip helper-address command.
Tips from successful candidates
Interview tips
- Narrate trade-offs; expect “why” after every answer
- Only list projects you can defend under follow-ups
- Prepare 3-4 STAR stories for behavioural prompts
HR tips
- Know why Cisco, not just why the industry
- Be clear on location / notice period / higher studies
- Practise answers on the dedicated HR page
Sources
These links are research inputs we used to map round structure and recurring questions - not copied page mirrors. We reorganized reports into process tables, outcome notes, and prep takeaways for Cisco.
Cross-check the current drive mail or careers posting for timings and pattern changes.
For the company overview and FAQs, see the Cisco hub. For behavioural STAR prompts, use the Cisco HR page. For OA drills, use Cisco on placementpapers.app.