Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About Wipro hiring for CCNA roles
Wipro is an Indian multinational technology services and consulting company providing IT, cloud, cybersecurity, engineering and data analytics services to enterprises worldwide. Its delivery teams work on application development, quality engineering and data platforms for clients in sectors like banking, healthcare and energy. In India it hires for testing, data analysis, support and development roles through programmes such as Wipro Elite NTH.
For CCNA roles, this Wipro practice set focuses most on Wireless and Automation (7), Network Fundamentals (6), STP and EtherChannel (4), Network Security (4). It has 15 easy, 15 medium questions, so you can start easy and work up to the harder ones.
Company type
IT services
Headquarters
Bengaluru, India
Main India offices
Bengaluru, Hyderabad, Pune, Chennai, Kolkata
Wipro CCNA interview process
Online assessment (aptitude + written communication)
Coding test
Technical interview
HR round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
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01
How does controller-based networking differ from traditional networking?
Traditionally each device has its own control plane and is configured box by box. In controller-based or software-defined networking, a central controller holds the policy and pushes it to devices through southbound APIs such as NETCONF or OpenFlow, while applications talk to the controller through northbound REST APIs. This gives consistent configuration, automation and network-wide visibility.
A VLAN is a logical Layer 2 broadcast domain created on a switch, independent of physical location. VLANs separate users, voice, guests and servers, reduce broadcast traffic, and improve security because traffic between VLANs must pass through a router or Layer 3 switch where it can be filtered. For example, finance and guest Wi-Fi users can share switches but stay isolated.
TCP is connection-oriented: it uses a three-way handshake, sequence numbers, acknowledgements, retransmission, windowing and flow control, so delivery is reliable and ordered. UDP is connectionless with an 8-byte header and no retransmission, so it is faster and lighter. HTTPS, SSH and SMTP use TCP; DNS queries, DHCP, SNMP, TFTP and voice or video RTP streams use UDP.
Put members in a channel group with mode active, then configure the port-channel.
interface range GigabitEthernet1/0/47 - 48
channel-group 1 mode active
interface Port-channel1
switchport mode trunk
switchport trunk allowed vlan 10,20,99
port-channel load-balance src-dst-ip
show etherchannel summary
Member interfaces must have the same speed and duplex, the same mode (access or trunk), the same access VLAN or the same native and allowed VLAN list on trunks, and compatible negotiation modes. Mismatched settings put members into suspended state. Configure settings on the port-channel interface so they are pushed to members, and verify with show etherchannel summary.
Routers send hellos to 224.0.0.5. They become neighbours if area ID, subnet and mask, hello and dead timers, authentication and stub flags match, and the router IDs are unique. States go Down, Init, 2-Way, ExStart, Exchange, Loading and Full. In ExStart and Exchange they agree master and slave and swap database descriptions, which is where an MTU mismatch causes a stuck adjacency.
07
What are the IPv4 address classes and private ranges?
Class A is 1 to 126 with a default /8, Class B is 128 to 191 with /16, Class C is 192 to 223 with /24, Class D 224 to 239 is multicast and Class E is reserved. RFC 1918 private ranges are 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16. 127.0.0.0/8 is loopback and 169.254.0.0/16 is APIPA link-local. Today addressing is classless (CIDR).
08
How do you write a simple Python script to fetch interface data from a device?
Netmiko handles SSH sessions; keep credentials in a file or vault, not the script.
import yaml
from netmiko import ConnectHandler
# r1.yml holds device_type, host, username, password
with open('r1.yml') as f:
device = yaml.safe_load(f)
with ConnectHandler(**device) as conn:
output = conn.send_command('show ip interface brief')
print(output)
A switch reads the source MAC of each incoming frame and records it with the port in the MAC address table. For forwarding it looks up the destination MAC: a known unicast goes out one port, while unknown unicast, broadcast and most multicast frames are flooded in the VLAN. Entries age out after 300 seconds by default. Check with show mac address-table.
10
Explain password security best practices for network devices.
Use enable secret, not enable password, so the hash is strong (type 8 or 9 on modern IOS). Create local users with secret, enforce minimum length with security passwords min-length, and use AAA with TACACS+ for central control. Disable Telnet, use SSH v2, set exec-timeout on lines, and add login block-for to slow brute force. Avoid type 7 passwords, which are easily reversed.
The TCP/IP model has four or five layers. Its Application layer covers OSI layers 5 to 7, Transport maps to Layer 4, Internet maps to Layer 3, and Network Access (or Link plus Physical) covers layers 1 and 2. CCNA uses the five-layer version. Real protocols such as HTTP, TCP and IP are defined by the TCP/IP suite, so it is the practical model.
WPA2 uses AES-CCMP; WPA2-Personal uses a pre-shared key that is vulnerable to offline dictionary attacks, and WPA2-Enterprise uses 802.1X with RADIUS. WPA3-Personal replaces PSK with SAE, which resists offline guessing and gives forward secrecy. WPA3-Enterprise offers a 192-bit mode. WPA3 requires protected management frames. Open networks can use OWE for encryption without passwords.
13
What is the difference between a hub, a switch and a router?
A hub is a Layer 1 repeater: it floods every bit out of every port, so all ports share one collision domain. A switch is Layer 2: it learns MAC addresses and forwards frames only to the correct port, giving each port its own collision domain. A router is Layer 3: it forwards packets between IP networks and separates broadcast domains.
802.1Q inserts a 4-byte tag after the source MAC in the Ethernet frame. The tag holds a 12-bit VLAN ID (1 to 4094 usable), 3 priority bits used by CoS for QoS, and a DEI bit. The tag is added when a frame leaves a trunk and removed at an access port. Older ISL encapsulation is obsolete; modern switches support only 802.1Q.
802.11n (Wi-Fi 4) works on 2.4 and 5 GHz with MIMO. 802.11ac (Wi-Fi 5) is 5 GHz only with wider channels and MU-MIMO downlink. 802.11ax (Wi-Fi 6 and 6E) adds OFDMA, BSS colouring and target wake time, and 6E adds the 6 GHz band. 802.11be (Wi-Fi 7) adds 320 MHz channels and multi-link operation. India opened part of the 6 GHz band for indoor use.
16
How do you stay updated on network security threats?
Situation: as a fresher I realised many interview questions asked about recent attacks. Task: build a habit of learning. Action: I follow vendor security advisories, CERT-In alerts and a few security newsletters, practise in a home lab with packet captures, and read the release notes of devices we use. Result: I can explain current threats in interviews and suggested patching a vulnerable IOS version in my internship.
17
What are the STP port states and timers in classic 802.1D?
States are blocking, listening, learning, forwarding and disabled. Timers are hello 2 seconds, forward delay 15 seconds and max age 20 seconds. A port moves from blocking through listening and learning, each 15 seconds, so convergence can take 30 to 50 seconds. That delay is why Rapid STP and PortFast are used in modern networks.
18
Where do you see yourself in five years in networking?
Situation: I started with CCNA and a support role. Task: build a clear path. Action: I plan to master routing, switching and wireless in the next two years, pass CCNP Enterprise, and build automation skills in Python and Ansible alongside cloud networking. Result I aim for: a network engineer or architect role leading campus and SD-WAN projects, mentoring juniors and owning designs end to end.
In 2.4 GHz each channel is about 22 MHz wide but channels are only 5 MHz apart, so most adjacent channels overlap and interfere. Channels 1, 6 and 11 are the only three non-overlapping channels, so neighbouring access points should alternate between them. The 5 GHz band has many more non-overlapping 20 MHz channels, which is why it is preferred for capacity.
20
What is the difference between a two-tier and a three-tier campus design?
A three-tier design has access, distribution and core layers: access connects users, distribution aggregates access switches and applies policy, and the core provides fast transport between distribution blocks. A two-tier or collapsed-core design merges core and distribution, which suits small and medium campuses with fewer buildings. Three-tier scales better when there are many distribution blocks.
DHCP snooping classifies ports as trusted (uplinks toward real DHCP servers) or untrusted (user ports). Server messages such as Offer and Ack arriving on untrusted ports are dropped, which stops rogue DHCP servers. It also builds a binding table of MAC, IP, VLAN and port, which Dynamic ARP Inspection and IP Source Guard use. Rate limits on untrusted ports prevent DHCP starvation.
22
How are ACL entries processed and what is the implicit deny?
ACL entries are checked top-down and the first match decides permit or deny; later lines are ignored. Every ACL ends with an invisible deny any, so traffic that matches no line is dropped. Therefore specific entries must come before general ones, and an ACL with only deny statements blocks everything. Always add a permit for allowed traffic and test after applying.
23
Explain the NAT terms inside local, inside global, outside local and outside global.
Inside local is the private address of an inside host, for example 192.168.1.10. Inside global is the public address that represents it outside, for example 203.0.113.5. Outside global is the real address of the remote host. Outside local is how the remote host appears to inside users, usually the same as outside global unless destination NAT is used. show ip nat translations displays these columns.
24
A host shows IP 169.254.12.5. What does this mean and what will you check?
169.254.x.x is an APIPA address, assigned when the host fails to get a DHCP lease. I would check that the port is up and in the correct VLAN, that the DHCP server has free addresses in the scope, and that the router interface for that VLAN has ip helper-address pointing to the server if the server is remote. Then I run ipconfig /renew and check server logs.
Single-mode fiber has a small core (about 9 microns) and uses a laser, so it carries light over long distances, often 10 km or more. Multimode fiber has a larger core (50 or 62.5 microns), uses cheaper LED or VCSEL optics and suits shorter runs inside a building or data center, usually up to a few hundred metres at 10 Gbps. SFP modules must match the fiber type.
26
What is the difference between an access port and a trunk port?
An access port belongs to one VLAN and carries untagged frames, typically to PCs, printers or servers. A trunk port carries traffic for many VLANs between switches, routers or hypervisors, adding an 802.1Q tag to identify each frame's VLAN, except the native VLAN which is sent untagged. Access ports can also carry a separate voice VLAN for IP phones.
Set a router ID, enable OSPF on interfaces and make user ports passive.
router ospf 1
router-id 1.1.1.1
auto-cost reference-bandwidth 100000
passive-interface GigabitEthernet0/1
network 10.0.12.0 0.0.0.3 area 0
network 192.168.1.0 0.0.0.255 area 0
default-information originate
Or per interface: ip ospf 1 area 0
28
Syslog timestamps from different devices do not match during an incident review. What do you fix?
Clocks are not synchronised. I configure all devices to use the same internal NTP servers with ntp server, set the timezone with clock timezone IST 5 30, add service timestamps log datetime msec localtime, and enable NTP authentication. Then I check show ntp associations and show ntp status to confirm synchronisation. This makes future incident timelines reliable.
LACP (802.3ad, now 802.1AX) is the open standard with modes active and passive; at least one side must be active. PAgP is proprietary with modes desirable and auto; at least one side must be desirable. Mode on forces the channel with no negotiation, which can cause loops if the other side is not configured. LACP is preferred because it works with servers, firewalls and other vendors.
The SSID is the network name users see. The BSSID is the MAC address of the access point radio serving a BSS, the basic service set of one AP and its clients. An ESS is multiple BSSs sharing the same SSID connected by a wired distribution system, so clients can roam between APs. Each AP can broadcast several SSIDs, each with its own BSSID.
Tips to crack the Wipro CCNA interview
Prepare for the essay writing section in the online test by practising short, clear, grammatically correct essays on general topics.
Revise basic coding problems on strings and arrays plus fundamentals of DBMS, operating systems and computer networks.
Learn about Wipro's values, known as the Spirit of Wipro, and its focus areas such as cloud and cybersecurity.
Keep a one-minute story ready for every project on your CV: problem, your part, tools, result.
Practise the hard questions on this page aloud; Wipro interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the Wipro CCNA interview?
Candidates usually go through 4 stages: Online assessment (aptitude + written communication); Coding test; Technical interview; HR round. The exact rounds change with the role, team, location and your experience, so confirm the process with the recruiter.
Which topics should I prepare for the Wipro CCNA interview?
This practice set leans on Wireless and Automation (7), Network Fundamentals (6), STP and EtherChannel (4), Network Security (4). Revise those first, then practise explaining one or two of your own projects end to end, because most Wipro interviewers ask you to walk through real work.
Are these the exact questions asked at Wipro?
No. These are curated practice questions that match the skills and difficulty usually tested in it services interviews like Wipro's. They are not a leaked or verified list of past questions.
Where does Wipro hire CCNA professionals in India?
Wipro has large teams in Bengaluru, Hyderabad, Pune, Chennai, Kolkata. Openings and locations change often, so check the Wipro careers page and filter by city and experience.