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050-SEPROSIEM-01 · Question #2

The DNS Resolver Service

The correct answer is D. Performs DNS lookups for the corresponding IP address. The DNS Resolver Service in RSA enVision performs DNS lookups to map IP addresses found in log events to their corresponding hostnames, enriching event data.

Archer Platform Architecture and Components

Question

The DNS Resolver Service

Options

  • AResolves hostnames
  • BStores the results in a DHCP cache.
  • CQueries events for the resolving port
  • DPerforms DNS lookups for the corresponding IP address

How the community answered

(23 responses)
  • A
    4% (1)
  • B
    4% (1)
  • C
    9% (2)
  • D
    83% (19)

Why each option

The DNS Resolver Service in RSA enVision performs DNS lookups to map IP addresses found in log events to their corresponding hostnames, enriching event data.

AResolves hostnames

This answer is incomplete and imprecise - the service's specific technical action is performing DNS lookups for IP addresses, not simply 'resolving hostnames' as a general description.

BStores the results in a DHCP cache.

The DNS Resolver Service stores resolved results in a DNS cache, not a DHCP cache - DHCP and DNS are entirely separate protocols and services.

CQueries events for the resolving port

The DNS Resolver Service does not query events for a resolving port; it performs DNS lookups on IP addresses contained within log event data.

DPerforms DNS lookups for the corresponding IP addressCorrect

The DNS Resolver Service executes forward and reverse DNS lookups against IP addresses extracted from collected log events, translating them into human-readable hostnames so that analysts can more easily identify event sources during investigation and reporting within enVision.

Concept tested: RSA enVision DNS Resolver Service function

Topics

#DNS Resolver Service#IP address lookup#hostname resolution#network service

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