The users of the local network complain that name resolution is not fast enough. Enter the command, without the path or any options, that shows the time taken to resolve a DNS query.

The following is an excerpt from the output of tcpdump -nli eth1: 13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags [.], ack 1 (truncated) 13:03:17.598624 IP 192.168.5.112.21 > 192.1...

Which /etc/hosts.allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.) A. sshd : 192.168.1. B. sshd : 192.168.1 C. sshd : 192.168.1.0 ne...

Running tcpdump -nli eth1 'tcp' shows the following output: 14:41:53.694538 IP 10.1.52.145.51738 > 24.215.7.162.143: Flags [.], ack 33051, win 1002, options [nop,nop,TS val 36789130 ecr 1746004159...

Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.) A. source B. src C. dest D. src or dst E. both

Under which of the following circumstances would the command ping output the string (DUP!)? A. When the ICMP packets are send to a broadcast address and multiple hosts respond. B. When the host be...

Which of the following commands can be used to list IPv4 addresses and MAC addresses for IP devices that the system has seen on the local network? A. arp B. ifconfig C. ipadm D. iwlist

Considering the following kernel IP routing table below, which of the following commands must be used to remove the route to the network 10.10.1.0/24? (Select TWO answers) Kernel IP routing table...

According to the tcpdump output below, what is the IP address of the client host? 02:12:40.511381 IP 192.168.246.11.1045 > 192.168.246.1.22: S 3838532429:3838532429(0) win 5840 <mss 1460,sackOK,tim...

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