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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 a zero-day vulnerability?

    • •A virus that activates on the first day of each month
    • •An attack that can be executed in zero seconds
    • •A security flaw unknown to the vendor that has no patch available, potentially allowing exploitation before discovery
    • •A vulnerability that only exists on the day a system is deployed

  2. 2.What is anycast routing?

    • •A routing technique where the same IP address is assigned to multiple servers in different locations; traffic is routed to the nearest one
    • •A multicast variant that selects a random recipient
    • •Routing traffic through every available path simultaneously
    • •Broadcasting traffic to all devices on a network simultaneously

  3. 3.What is DNSSEC?

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

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

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

  5. 5.What is NAT (Network Address Translation)?

    • •A tool for converting network names to addresses
    • •An encryption standard for network traffic
    • •A protocol for translating between IPv4 and IPv6
    • •A method of mapping private IP addresses to public IP addresses for internet access

  6. 6.What is the CAM table overflow attack?

    • •Flooding a switch's MAC address table with fake entries, causing it to fail open and broadcast all traffic like a hub
    • •Overloading a router's routing table with false routes
    • •Exhausting DHCP address pools to prevent legitimate devices from connecting
    • •Filling a server's memory with malicious requests

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

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

  8. 8.What is the spine-leaf data center architecture?

    • •A topology with one central spine and branches for redundancy
    • •A two-tier topology where every leaf switch connects to every spine switch, providing consistent low-latency east-west connectivity
    • •A three-tier architecture with core, distribution, and access layers
    • •A mesh network where all switches connect to all others

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

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

  10. 10.What is the QUIC protocol?

    • •A quick-connect wireless protocol for IoT devices
    • •A compression protocol for faster web page loading
    • •A Google-developed transport protocol built on UDP that provides multiplexed connections with TLS 1.3 encryption and reduced latency
    • •A quick DNS resolution protocol that caches results aggressively