Network

The command _____ displays the status of the network netstat
The command netstat _____ displays the status of the network
Predefined ports used by the OS for short-lived client sockets are called _____ ports. Ephemeral
The command ip link set veth1 netns ns1 _____ adds a virtual ethernet interface to a network namespace
The command _____ creates a network namespace ip netns add ns1
The command _____ traces the route to a given host traceroute
The command ip link _____ lists network interfaces on the localhost
The command ethtool _____ shows Ethernet card settings
The command ip addr _____ shows network interfaces on the host system
The command ip -n ns1 addr add 192.168.15.1 dev veth1 _____ ip -n ns1 link set veth1 up ip -n ns2 link set veth2 up assigns an IP to a network namespace ip -n ns2 addr add 192.168.15.2 dev veth2
The command ip netns exec _____ can be used to run commands inside a network namespace
The command _____ displays remote hosts connected to yours on port 3333 netstat -a | grep 3333
The _____ file is a list of hostname-to-IP address mappings for resolving hostnames (DNS) /etc/hosts
The command nslookup _____ queries a website's name server
The command _____ shows network interfaces on the host system ip addr
To connect several network namespaces you need a virtual _____, ex. Linux Bridge or Open vSwitch switch / bridge network
Can network namespaces (netns) implement network isolation? _____ Yes
The command ip -n ns1 link _____ lists network interfaces inside a namespace
The command _____ can be used to run commands inside a network namespace ip netns exec
The command ip -n ns1 link del veth1 _____ deletes a veth pair between namespaces
The command ip route add blackhole $BANNED_IP _____ blocks an IP from connecting to your host
The tracert command uses the _____ network protocol ICMP
The command ip link add veth1 type veth peer name veth2 _____ links two virtual ethernet interfaces
The command _____ queries a website's name server nslookup
The command traceroute _____ traces the route to a given host
The command _____ links two virtual ethernet interfaces ip link add veth1 type veth peer name veth2
The command _____ ip -n ns2 addr add 192.168.15.2 dev veth2 ip -n ns1 link set veth1 up ip -n ns2 link set veth2 up assigns an IP to a network namespace ip -n ns1 addr add 192.168.15.1 dev veth1
The command ip -n ns1 addr add 192.168.15.1 dev veth1 ip -n ns2 addr add 192.168.15.2 dev veth2 ip -n ns1 link set veth1 up _____ assigns an IP to a network namespace ip -n ns2 link set veth2 up
The command ip -n ns1 addr add 192.168.15.1 dev veth1 ip -n ns2 addr add 192.168.15.2 dev veth2 ip -n ns1 link set veth1 up ip -n ns2 link set veth2 up _____ assigns an IP to a network namespace
The command ip netns add ns1 _____ creates a network namespace
"The command ip link add veth1 type veth peer name veth1-bridge ip link set veth1-bridge master v-net-0 _____" links a veth interface ""veth1"" to a bridge network ""v-net-0""
The command _____ lists network interfaces on the localhost ip link
The command _____ finds the hostname of an IP address. dig
The _____ file specifies the DNS server and domain suffix of the system. /etc/resolv.conf
The command ip -n ns1 addr add 192.168.15.1 dev veth1 ip -n ns2 addr add 192.168.15.2 dev veth2 _____ ip -n ns2 link set veth2 up assigns an IP to a network namespace ip -n ns1 link set veth1 up
The command _____ blocks an IP from connecting to your host ip route add blackhole $BANNED_IP
The command netstat -a | grep 3333 _____ displays remote hosts connected to yours on port 3333
The command _____ lists network interfaces inside a namespace ip -n ns1 link
"The command _____ links a veth interface ""veth1"" to a bridge network ""v-net-0""" ip link add veth1 type veth peer name veth1-bridge ip link set veth1-bridge master v-net-0
The command dig _____ finds the hostname of an IP address.
The command _____ creates a new bridge network ip link add v-net-0 type bridge ip link set dev v-net-0 up
The command _____ adds a virtual ethernet interface to a network namespace ip link set veth1 netns ns1
The ping command uses the _____ network protocol ICMP
The command ip link add v-net-0 type bridge ip link set dev v-net-0 up _____ creates a new bridge network
The command _____ deletes a veth pair between namespaces ip -n ns1 link del veth1
The command _____ shows Ethernet card settings ethtool