Examkin

Question

Difficulty: MediumIP Addressing Services

Match each IP addressing service or protocol component to its primary administrative function within network operations.

  • IPAM (IP Address Management)Provides centralized tracking, planning, and management of IP address spaces across DNS and DHCP infrastructure.
  • mDNS (Multicast DNS)Performs local name resolution on a single link segment without requiring a dedicated DNS server.
  • DHCP Option 82Inserts circuit and remote ID metadata into request packets to enable location-aware IP allocation.
  • NTP Stratum 1Synchronizes system clocks directly from a reference atomic clock or GPS time source.

Answer

IPAM matches with centralized tracking of IP address spaces; mDNS matches with local name resolution without a dedicated DNS server; DHCP Option 82 matches with inserting circuit/remote ID metadata into request packets; NTP Stratum 1 matches with synchronizing system clocks directly from a reference atomic or GPS clock.
Each IP addressing service fulfills a distinct core infrastructure function: IPAM centralizes address governance, mDNS handles zero-configuration local name resolution, DHCP Option 82 injects physical location metadata into DHCP requests, and NTP Stratum 1 synchronizes directly to primary reference clocks.

Step-by-Step Solution

1
Identify the primary role of IPAM.
IPAM provides centralized management and monitoring of subnets, DNS records, and DHCP pools.
IPAM is designed for centralized visibility across network addressing services.
2
Identify the role of mDNS (Multicast DNS).
mDNS resolves hostnames locally using multicast without reliance on a unicast DNS infrastructure.
mDNS facilitates zero-configuration local service discovery.
3
Analyze the function of DHCP Option 82.
DHCP Option 82 adds relay agent information, such as physical port and switch ID, to DHCP request packets.
This allows administrators to apply policy based on the requester's physical network point of connection.
4
Determine the accuracy specification for NTP Stratum levels.
Stratum 1 NTP servers attach directly to Stratum 0 physical time sources (GPS, Cesium clocks).
Stratum numbering defines hierarchy and proximity to authoritative time sources.

Key Concept

Core IP addressing services (IPAM, mDNS, DHCP Relay Options, NTP) provide essential support for dynamic allocation, resolution, security context, and time synchronization across network topologies.
Rate this question

Topics

IP Addressing Services

More questions from this topic