Red Hat Chapter 12

Which TCP/IP network model is responsible for IP addresses?

Network

Which statements are methods used to test DNS resolution (choose 2)?

-host bastion -host 172.25.250.10

Refer to the following transcript. Which statement about tracepath is most correct?

DNS is working on host servera.

Which statements about host name and name resolution are most correct (choose 3)?

-By default, name resolution is first checked in file /etc/hosts, then a DNS request is sent to a DNS server specified in /etc/resolv.conf. -The file /etc/resolv.conf may be overwritten by NetworkManager updates. -The file /etc/hostname makes the host name persistent across reboots.

Which statements about host names and IP addresses are most correct (choose 2)?

-DNS requires that a nameserver is configured. -Static name resolution is configured in /etc/hosts.

Which statements about IPv4 Networking are most correct (choose3)?

-IP address 172.17.0.255/24 is a 24 bit mask broadcast address. -IP address 192.168.47.0/24 is a 24 bit mask network address with 254 usable hosts. -The IPv4 address 127.0.0.1 is a special address for the logical loopback interface.

Which statements about IPv4 and IPv6 networking are most correct (choose 3)?

-IPv4 network settings may be automatically configured at boot time from a DHCP server. -Static network configuration is enabled when network settings obtained from one or more local configuration files. -IPv4 and IPv6 network addressing may be configured in a dual-stack mode.

Refer to the following transcript. Which statements about the network configuration are most correct (choose 3)?

-The DNS server IP address is 172.25.250.254. -The Gateway IP address is 172.25.250.254. -The IPv4 network configuration was manually entered.

Refer to the following transcript. Which statements are the most correct (choose 3)?

-The mail service is listening on the localhost interface. -The SSH service is listening on all interfaces. -The Telnet service is not started.

Which statement about network configuration settings are most correct (choose 3)?

-User root may configure any network settings. -The nmcli directive ipv4.method auto will require DHCP4 network configuration. -A normal user logged in to the local console may make some network configuration changes.

Which commands related to troubleshooting Linux networking are most correct (choose 2)?

-ip route will display the routing table on a host. -ping -c3 classroom.example.com will test connectivity between the local host and classroom host.

From the nmcli command on the left, select the correct purpose on the right.

-nmcli dev status - Show the Network Manager status for all network interfaces -nmcli con show - List all network connections -nmcli con reload - Used to reload network configuration files after they have been modified manually. -nmcli con up - Activate the network connection. -nmcli con mod - Make changes to an existing network connection.

Which statement about IPv6 networking is most correct?

2019:ef3:f::1 is a vaild IPv6 address.

Refer to the following ifconfig command output that lists network interfaces. What type of interface is enp1s0?

This is an ethernet PCI device on bus 1, slot 0.

Refer to the following transcript. Which statement about network configuration is most correct?

To make this an IPv4 dynamic network configuration, set the directive to BOOTPROTO=dhcp

Which statement about RHEL8 networking is most correct?

With the default network configuration, to deactivate network connection eth0 use the command nmcli dev dis eth0.