Which command can be used to scan a specified network looking for IP addresses that appear to be in use? A. nmap B. tcpdump C. ip D. netscan E. hostdiscover

What should be done to ensure a client machine uses the recursive nameserver running on the IP address 192.168.0.1? (Choose TWO correct answers.) A. Add nameserver 192.168.0.1 to /etc/resolv.conf....

A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this? (Choose TWO correct...

Which of the following commands can be used to script interactions with various TCP or UDP services? A. ftp B. nc C. tcpdump D. strings E. wget

What is the command to add another IP address (192.168.1.2) to a network interface (eth0) that already has (at least) one IP address in the 192.168.1.0/24 subnet? A. ip add addr 192.168.1.2/32 dev ...

A network client has an ethernet interface (eth0) configured with an IP address in the subnet 192.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to th...

Which of the following commands will list the IPv4 neighbors of the current system? This includes IP and MAC addresses. (Choose TWO correct answers.) A. arp B. ifconfig -lv eth0 C. netstat -al D...

What is incorrect about these entries in /etc/hosts which could be causing host name lookup problems with host2? host1 192.168.1.12 host2 192.168.1.12 A. Two host names are using the same IP ad...

Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)

Which of the following files are used to resolve hostnames to IP addresses? (Choose TWO correct answers.) A. /etc/systems B. /etc/hosts C. /etc/network D. /etc/dns.conf E. /etc/resolv.conf