CompTIA Server+ (SK0-005)Server AdministrationMedium
A server administrator is deploying a new web server on a Linux distribution. The server needs to have a consistent IP address, gateway, and DNS server configuration that persists across reboots without using a DHCP server. Which file should the administrator modify to configure these static network settings?
- A/etc/network/interfaces
- B/etc/resolv.conf
- C/etc/hosts
- D/etc/sysconfig/network-scripts/ifcfg-eth0
Show answer & explanationAnswer & explanation
Correct answer: A. /etc/network/interfaces
On Debian-based Linux distributions (like Ubuntu), the '/etc/network/interfaces' file is used to define static network configurations for network interfaces, including IP address, netmask, gateway, and DNS servers.
Why the other options are wrong
- B. This file is primarily for DNS resolver configuration, often overwritten by network managers or DHCP.
- C. This file maps hostnames to IP addresses locally, not for configuring network interface settings.
- D. This path is typically used on Red Hat-based systems (e.g., RHEL, CentOS), not Debian-based ones.
Linux Static Network Config
Manually assigning network parameters (IP, gateway, DNS) to a network interface on a Linux server.
- Ensures consistent network identity.
- Requires specific configuration files based on distribution.
- Overrides DHCP settings if configured.
Memory trick: Interfaces define the network's face, resolv tells names where to race.