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Accenture · Computer Networks
Practice Computer Networks questions specifically asked in Accenture interviews – ideal for online test preparation, technical rounds and final HR discussions.
Questions
19
Tagged for this company + subject
Company
Accenture
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Subject
Computer Networks
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Go through each question and its explanation. Use this page for targeted revision just before your Accenture Computer Networks round.
Class A networks reserve the first 8 bits for the network portion, leaving 24 bits for hosts. This allows around 16 million hosts per network. While efficient for large organizations, classful addressing has been replaced by CIDR in modern networks.
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UDP sends data directly without establishing a connection. This reduces delay and overhead, making it ideal for time-sensitive applications like video streaming or gaming. However, reliability and ordering are left to the application.
The Physical Layer is responsible for the actual transmission of raw bits over a communication channel. It defines electrical, optical, and mechanical characteristics such as voltage levels, pin configurations, data rates, and cable types. This layer ensures that bits are physically moved from one node to another.
The Media Access Control (MAC) address is a 48-bit identifier hard-coded into a network card. It uniquely identifies a device on a LAN. MAC addresses enable the Data Link Layer to deliver frames between local devices.
Simple Mail Transfer Protocol (SMTP) handles sending of emails from clients to mail servers and between servers. POP3 and IMAP are used for retrieving emails. Interviewers often test your ability to distinguish these roles.
Traceroute helps visualize the path a packet takes through intermediate routers. It uses TTL values to reveal each hop and detect where delays or failures occur. This is invaluable for identifying routing issues or bottlenecks.
traceroute 8.8.8.8
A parity bit is an extra bit added to make the total number of 1s even or odd. If the received data does not match the expected parity rule, an error is detected. Though it cannot correct errors, parity checking provides a quick and inexpensive error-detection method.
The TTL field prevents packets from looping endlessly in case of routing errors. Each router decrements TTL by one; when it reaches zero, the packet is discarded and an ICMP ‘Time Exceeded’ message is sent back. TTL protects network stability.
A routing table lists destination IP networks, their next-hop addresses, and the cost or metric to reach them. Routers refer to these tables to forward packets efficiently toward their destination.
Simple Network Management Protocol (SNMP) enables administrators to monitor device status, performance, and configuration using management information bases (MIBs). It’s critical in enterprise network maintenance and troubleshooting.
Cookies store small pieces of data like session IDs on the client side to maintain state in the otherwise stateless HTTP protocol. They help websites remember users, preferences, or login sessions across multiple requests.
Encryption is the process of converting plaintext into ciphertext to protect it from unauthorized access. Only authorized users with the correct key can decrypt and read the data. It is essential for secure communication across untrusted networks like the Internet.
Hashing converts data into a fixed-length digest using algorithms like SHA or MD5. It is used to detect unauthorized modifications. Even small changes in input produce a different hash, making it ideal for verifying file integrity or storing passwords securely.
IPSec secures IP communication by authenticating and encrypting each IP packet in a communication session. It operates at the network layer and supports VPNs, ensuring confidentiality, data integrity, and origin authentication.
MQTT (Message Queuing Telemetry Transport) is a lightweight publish-subscribe protocol designed for constrained IoT devices and low-bandwidth networks. It ensures reliable communication between sensors and cloud services with minimal power use.
Bluetooth is based on the IEEE 802.15.1 standard. It supports short-range communication using low-power radio waves, typically for personal area networks connecting devices like phones, headsets, and keyboards.
An access point connects wireless clients to a wired network infrastructure. It allows mobile users to connect and move within the network’s range. Access points form the backbone of wireless LAN architecture.
Bandwidth refers to how much data can be transmitted in a given time, usually measured in bits per second. Latency is the time delay between sending a request and receiving a response. For example, a high-bandwidth but high-latency link can transfer large files fast but respond slowly to small interactive requests.
Subnetting divides a network into smaller parts to improve management, reduce congestion, and enhance security. Each subnet functions as a smaller network, conserving IP addresses and allowing administrators finer control of traffic routing and broadcast domains.