Fill in the blank.
What command ensures that the file systems are written to disk after a lot of write operations? (Specify ONLY the command without any path or parameters.)

CORRECT TEXT
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,timestamp
31325740,nop,wscale 2>
02:12:40.511540 IP 192.168.246.1.22 > 192.168.246.11.1045: S
1209330085:1209330085(0) ack 383853 2430 win 5792 <mss 1460,sackOK,timestamp
11553457 3132574,nop,wscale 0>
0 2:12:40.511755 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 1 win 1460
< nop,nop,timestamp 3 132574 11553457>
0 2:12:40.515122 IP 192.168.246.1.22 > 192.168.246.11.1045: P 1:26(25) ack 1 win 5792
< nop,nop,timestamp 11553460 3132574>
0 2:12:40.515511 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 26 win 1460
< nop,nop,timestamp 3132578 11553460>
0 2:12:40.515952 IP 192.168.246.11.1045 > 192.168.246.1.22: P 1:23(22) ack 26 win 1460
< nop,nop,timestamp 3132578 11553460>

Due to extreme system use, a Linux system requires some additional swap space. To initialize 5 GB of additional swap space, which combination of commands should be used?

Which command can be used to scan a specified network looking for IP addresses that appear to be in use?

What does a 0 in the last field (fsck order) of /etc/fstab indicate about the filesystem?