Which of the following must you perform to share a directory using NFS? (Choose all that apply.)
A. Edit the /etc/exports file.
c. Run the exportfs –a command.
d. Start or restart the NFS daemons.
[To share a folder using NFS, you must list it in the /etc/exports file, run the exportfs command to copy the file to memory, and restart the NFS daemons.]
You can purchase object storage from a cloud provider to provide persistent filesystem-based storage.
False
[Object storage provides access to storage via HTTP instead of persistent access to a filesystem.]
What directory are you placed in when you log in as the anonymous user to an Ubuntu FTP server?
B) /srv/ftp
[On an Ubuntu system, the anonymous FTP directory is /srv/ftp.]
Which command can you use to synchronize ntpd with an NTP time source?
D) ntpq
[The ntpq command can be used to manually synchronize the system time with another time source.]
What must you do to transform your computer into a DNS server? (Choose all that apply.)
a. Create zone files.
b. Create resource records for DNS lookups.
c. Create NIS maps.
d. Run the name daemon (named).
a. Create zone files.
b. Create resource records for DNS lookups.
d. Run the name daemon (named).
[To provide DNS services, you must configure zone files that contain the appropriate resource records and start the name daemon.]
Mary is a system administrator in your organization. She has recently made changes to the DHCP configuration file, but the DHCP daemon does not seem to recognize the new changes. What should she do?
C) Restart the DHCP daemon.
[After modifying the DHCP configuration file, you must restart the DHCP daemon for the changes to take effect.]
DHCP clients send a DHCPREQUEST packet when they require a new IP configuration.
False
[DHCP clients send a DHCPDISCOVER packet when they require a new IP configuration.]
Which of the following can be used to create a database within PostgreSQL? (Choose all that apply.)
C. the CREATE DATABASE statement within the PostgreSQL utility
d. the createdb command
[You can use the CREATE DATABASE statement within a SQL query, or the createdb command to create a PostgreSQL database.]
Which command can be used to connect to check the /etc/samba/smb.conf file for syntax errors?
A) testparm
[The testparm command tests the syntax of the Samba configuration file.]
Which command can be used to list containers that are currently running on the operating system only?
B) docker ps
[The ps option to the docker command displays only running containers by default.]
Which command can be used to connect to a remote Windows share called data on the server called fileserver?
A) smbclient //fileserver/data
[You must use the //fileserver/data path alongside the smbclient command to connect to the data share on fileserver.]
Docker Hub is an example of a container registry.
True
[Docker Hub maintains a repository of container images and is called a container registry.]
loud providers use the PaaS delivery model to host web apps using containers for scalability.
True
[Containers are hosted on cloud providers using the Platform as a Service (PaaS) delivery model.]
To create a container using the docker build command, you must first create a Dockerfile.
True
[A Dockerfile specifies the configuration performed by the docker build command when building a container.]
Stratum 1 NTP servers do not obtain time information from other NTP servers.
True
[Stratum 1 NTP servers obtain their information directly from a reliable time source (e.g., atomic clock).]
Which of the following terms refers to a single copy of a web app that is run within a Kubernetes cluster?
D. pod
[Web apps are called pods in Kubernetes.]
Which DNS resource record is an alias to other records?
C. CNAME
[CNAME records are aliases for other A or AAAA records.]
hich command within the command-line FTP utility can be used to change the current directory on the local computer?
D. lcd
[The lcd command within an FTP utility changes the local current directory.]
Which file stores the Apache configuration in Fedora?
C. /etc/httpd/conf/httpd.conf
[The default location for the main Apache configuration file on Fedora systems is /etc/httpd/conf/httpd.conf.]
You have modified the /etc/aliases file to include a new email alias. However, when you send email to the alias, it cannot be delivered. What should you do?
A. Run the newaliases command.
[After modifying /etc/aliases, you must run the newaliases command for the configuration to take effect.]
