Networks

  • What is the OSI model, and why is it important in networking?

    Junior

  • Explain the difference between TCP and UDP.

    Junior

  • What is a network topology?

    Junior

  • Name some common network topologies?

    Junior

  • What is a network protocol?

    Junior

  • Name some common network protocols?

    Junior

  • What is the purpose of an IP address and a MAC address?

    Junior

  • What is a MAC address table, and how does it work in a network switch?

    Junior

  • What is the subnet mask, and how does it relate to IP addressing?

    Junior

  • Explain the purpose of NAT (Network Address Translation).

    Junior

  • What is DNS (Domain Name System), and how does it work?

    Junior

  • What is the purpose of firewalls in network security?

    Junior

  • What is the difference between symmetric and asymmetric encryption?

    Junior

  • Explain the role of routers in a network.

    Mid

  • What is DHCP (Dynamic Host Configuration Protocol), and how does it work?

    Mid

  • What is the purpose of a switch in a network, and how does it differ from a hub?

    Mid

  • Explain the concept of VLANs (Virtual LANs) and their use in network segmentation.

    Mid

  • What is BGP (Border Gateway Protocol), and why is it important in internet routing?

    Mid

  • Explain the concept of Quality of Service (QoS) in networking and its role in prioritizing network traffic.

    Mid

  • What is a VPN (Virtual Private Network), and how does it provide secure communication over untrusted networks like the internet?

    Mid

  • What is latency in networking, and how does it affect network performance?

    Mid

  • Explain the concept of subnetting and its benefits in IP address management.

    Mid

  • What is ARP (Address Resolution Protocol), and how does it work?

    Mid

  • What are streams and datagrams?

    Mid

  • What is modulation?

    Mid

  • Name some modulation techniques?

    Mid

  • What is framing?

    Mid

  • Describe some error detection methods in the link layer?

    Mid

  • Explain the differences between Parity, Checksum, and Cyclic Redundancy Check (CRC)?

    Mid

  • Explain the concept of BGP (Border Gateway Protocol) route aggregation and its benefits in reducing the size of internet routing tables.

    Mid

  • Explain the concept of network latency and jitter, and how do they impact real-time applications like VoIP and video conferencing?

    Mid

  • What is MPLS (Multiprotocol Label Switching), and how does it enhance the efficiency of packet forwarding in IP networks?

    Mid

  • Explain the purpose of load balancing algorithms in a network and provide examples of different load balancing algorithms.

    Mid

  • Explain the purpose of DNSSEC (DNS Security Extensions) and how it enhances the security of the Domain Name System.

    Mid

  • What is the purpose of ICMP (Internet Control Message Protocol), and can you provide some examples of ICMP messages?

    Mid

  • Explain the concept of NAT traversal and its importance in peer-to-peer communication.

    Mid

  • What is the purpose of a proxy server, and how does it enhance security and privacy in network communication?

    Mid

  • Explain the concepts of DNS load balancing and anycast, and how they can improve the availability and performance of internet services.

    Mid

  • What is the purpose of an IDS (Intrusion Detection System) in network security, and how does it differ from an IPS (Intrusion Prevention System)?

    Mid

  • Explain the concept of SDN (Software-Defined Networking) and its benefits in network management and automation.

    Senior

  • What is a DDoS (Distributed Denial of Service) attack, and what are some strategies to mitigate its effects on a network?

    Senior

  • Explain the concept of VLAN trunking and how it allows multiple VLANs to traverse a single network link.

    Senior

  • What are the advantages and disadvantages of using IPv6 compared to IPv4, and why is IPv6 adoption important?

    Senior

  • Explain the concept of Q-in-Q (also known as VLAN stacking) and its use in network virtualization and provider networks.

    Senior

  • What is the purpose of HSRP (Hot Standby Router Protocol) and VRRP (Virtual Router Redundancy Protocol), and how do they enhance network reliability?

    Senior