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Networking — Advanced

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AdvancedTechnology
Today's questions

Today's quiz questions

These are the questions that make up today's quiz. Test your knowledge, see how much you know, and learn from the explanation behind every answer.

  1. 1.What is EIGRP?

    • •A protocol for managing enterprise VLAN configurations
    • •A QoS framework for enterprise networks
    • •An exterior gateway protocol used between ISPs
    • •Enhanced Interior Gateway Routing Protocol — a Cisco-developed advanced distance-vector routing protocol that uses DUAL algorithm

  2. 2.What is the TCP congestion control mechanism?

    • •A QoS policy that limits the number of simultaneous connections
    • •Algorithms (slow start, congestion avoidance, fast retransmit, fast recovery) that dynamically adjust sending rate to avoid network congestion
    • •A hardware-based flow control mechanism in network switches
    • •A fixed bandwidth limit set by the ISP on each connection

  3. 3.What is the purpose of HSRP/VRRP?

    • •High-speed routing protocols for data center interconnects
    • •Protocols for redundant WAN connections between sites
    • •Protocols for synchronizing routing tables between routers
    • •First-hop redundancy protocols that provide gateway failover by allowing multiple routers to share a virtual IP address

  4. 4.What is DNSSEC?

    • •A suite of extensions to DNS that provides authentication and integrity verification of DNS data
    • •A backup system for DNS servers
    • •An encrypted version of DNS that hides queries from ISPs
    • •A firewall specifically designed to protect DNS servers

  5. 5.What is the purpose of a network packet broker (NPB)?

    • •A load balancer specifically designed for packet-level traffic management
    • •A device that aggregates, filters, and distributes network traffic from TAPs/SPAN ports to the appropriate monitoring and security tools
    • •A trading platform for buying and selling network bandwidth
    • •A device that negotiates connection parameters between hosts

  6. 6.What is the purpose of QoS (Quality of Service) in networking?

    • •To measure the overall quality rating of a network
    • •To certify that network providers meet customer service standards
    • •To prioritize certain types of network traffic to ensure performance for critical applications
    • •To test network equipment for manufacturing defects

  7. 7.What is the purpose of OSPF (Open Shortest Path First)?

    • •A load-balancing protocol for web servers
    • •A protocol for optimizing file transfer speeds
    • •A protocol for managing firewall rules
    • •A link-state interior gateway routing protocol that finds the shortest path using Dijkstra's algorithm

  8. 8.What is DNSSEC?

    • •A secondary DNS protocol that replaces regular DNS
    • •DNS Security Extensions that add cryptographic signatures to DNS records, ensuring authenticity and integrity of responses
    • •An encrypted version of DNS that hides query content
    • •A firewall specifically designed to protect DNS servers

  9. 9.What is SDN (Software-Defined Networking)?

    • •A wireless network standard replacing Wi-Fi
    • •An architecture that separates the network's control plane from the data plane, making it programmable
    • •A type of firewall software for network protection
    • •A protocol for automating server backups

  10. 10.What is a network overlay?

    • •A redundant network that takes over when the primary fails
    • •A virtual network built on top of a physical network infrastructure, decoupling logical topology from physical topology
    • •A physical network cabling system that overlays existing infrastructure
    • •A network monitoring layer that sits between applications and hardware