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CompTIA Linux+ XK0-005 Networking Fundamentals Flashcards
| Front | Back |
| What does DHCP stand for? | Dynamic Host Configuration Protocol |
| What does NAT stand for? | Network Address Translation |
| What does TCP stand for? | Transmission Control Protocol |
| What is the default port for HTTPS traffic? | 443 |
| Which command can list open ports in firewalld? | firewall-cmd --list-ports |
| Which command can modify network interface settings on the fly? | ip |
| Which command displays the routing table? | route or ip route |
| Which command enables adding firewall rules in iptables? | iptables -A |
| Which command is used to test DNS name resolution? | dig or nslookup |
| Which command lists active TCP connections and listening ports in Linux? | netstat or ss |
| Which command quickly checks host reachability? | ping |
| Which command shows detailed IP information for all interfaces? | ip addr show |
| Which command traces the path a packet follows to a destination? | traceroute |
| Which file holds global SSH configuration settings on the system? | /etc/ssh/ssh_config |
| Which file is used to configure static IP addresses on Debian-based systems? | /etc/network/interfaces |
| Which file stores mappings of hostnames to IP addresses on the local system? | /etc/hosts |
| Which port does SSH typically use? | 22 |
| Which port is typically used for DNS over UDP? | 53 |
| Which protocol is used to securely copy files over SSH? | scp |
| Which SSH client configuration file holds per-user settings? | ~/.ssh/config |
Front
Which command displays the routing table?
Click the card to flip
Back
route or ip route
Front
Which command can list open ports in firewalld?
Back
firewall-cmd --list-ports
Front
Which port does SSH typically use?
Back
22
Front
Which command can modify network interface settings on the fly?
Back
ip
Front
Which command enables adding firewall rules in iptables?
Back
iptables -A
Front
Which command shows detailed IP information for all interfaces?
Back
ip addr show
Front
Which file holds global SSH configuration settings on the system?
Back
/etc/ssh/ssh_config
Front
Which SSH client configuration file holds per-user settings?
Back
~/.ssh/config
Front
Which file is used to configure static IP addresses on Debian-based systems?
Back
/etc/network/interfaces
Front
Which protocol is used to securely copy files over SSH?
Back
scp
Front
Which command quickly checks host reachability?
Back
ping
Front
What does TCP stand for?
Back
Transmission Control Protocol
Front
What does NAT stand for?
Back
Network Address Translation
Front
Which file stores mappings of hostnames to IP addresses on the local system?
Back
/etc/hosts
Front
What is the default port for HTTPS traffic?
Back
443
Front
What does DHCP stand for?
Back
Dynamic Host Configuration Protocol
Front
Which command lists active TCP connections and listening ports in Linux?
Back
netstat or ss
Front
Which port is typically used for DNS over UDP?
Back
53
Front
Which command is used to test DNS name resolution?
Back
dig or nslookup
Front
Which command traces the path a packet follows to a destination?
Back
traceroute
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This deck addresses Linux networking concepts including TCP/IP configuration, network services, firewall management, troubleshooting techniques, and remote connectivity options per the certification requirements.