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Difficulty: Very hardNetwork Host Services and Server Roles

A network technician is configuring an isolated staging subnet for newly provisioned corporate workstations. The technician needs to ensure that client machines automatically receive network IP addresses, default gateways, and local domain name resolution services. However, client machines must be prevented from reaching any internet-facing servers or downloading public resources. Which of the following server roles and configuration parameters must be active and properly scoped on this isolated network segment to fulfill these requirements? (Select TWO.)

  1. A DHCP server configured with an active scope to lease local IP addresses, subnet masks, and internal DNS server addressesAnswer
  2. A DNS server hosting internal primary zones for local host name resolution without root hints or forwarders configuredAnswer
  3. C
    A Proxy server configured to auto-assign 169.254.0.0/16 address ranges when client DHCP requests fail to receive a response
  4. D
    A Syslog server listening on TCP port 53 to perform authoritative domain name resolution and forward IP lease records

Answer

The correct selections are the DHCP server configured with an active IP leasing scope and the DNS server hosting internal zones without external forwarders.
To satisfy automatic configuration and restricted local name resolution, a DHCP server must be active to lease IP options to clients, and an internal DNS server must be present to resolve local resource hostnames while blocking external internet address resolution.

Step-by-Step Solution

1
Identify the service required for automatic IP configuration.
Dynamic Host Configuration Protocol (DHCP) provides automatic assignment of IP addresses, subnet masks, default gateway parameters, and DNS server addresses to client hosts.
Client workstations on the isolated staging segment require dynamic IP configuration without manual static entry.
2
Identify the service required for internal name resolution while restricting external internet access.
Domain Name System (DNS) server role configured with local authoritative zones and no external recursion/forwarders.
Clients must resolve internal hostnames, but omitting root hints and external forwarders prevents resolution of internet domains.

Key Concept

Network Host Services and Server Roles (DHCP and DNS Configuration for Isolated Subnets)
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Topics

Network Host Services and Server Roles

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