Which protocol is used by ping?
QUESTION 102 CORRECT TEXT
What is the command most often used for configuring network interfaces?
On a system using shadowed passwords, the correct permissions for /etc/passwd are ____- and the correct permission for /etc/shadow are _______.
A. -rw-r—–, -r——–
B. -rw-r–r–, -r–r–r–
C. -rw-r–r–, -r——–
D. -rw-r–rw-, -r—–r–
E. -rw——–, -r——-
Identify the statement that would create a default route using a gateway of 192.168.1.1
A. netstat-add default gw
B. route default 192.168.1.1
C. ip route default 192.168.1.1
D. route add default gw 192.168.1.1
E. ifconfig default gw 192.168.1.1 eth0
If you suspect that a gateway machine on your network has failed but you are unsure which machine, which command will help locate the problem?
According to the PPP HOWTO which piece of software could help you test a modem?
Suppose that the command netstat-a hangs for a long time without producing output.
You might suspect:
A. A problem with NFS
B. A problem with DNS.
C. A problem with NIS.
D. A problem with routing.
E. That thenetstatdaemon has crashed.
QUESTION 108 CORRECT TEXT
You build and configured a bastion host to act as a router between two internal networks. Both eth0 and eth1 can see hosts on their respective networks, but the hosts on each network cannot see any hosts on the other network. After verifying that the hosts have the correct gateway route, you decide the bastion host does not have IP forwarding turned on. To check this cat the file /proc/sys/net/ipv4/ _______ to ensure it has a 1.
When using /etc/ppp/peers/* files, which of the following is true:
A. The /etc/ppp/options should be empty.
B. Any user can runpppdfrom the command line.
C. The dial-on-demand option cannot be used.
D. You must use chap authentication.
You want a secure and fast DNS server that must also be quickly accessible remotely.
A. Reject all udp packets.
B. Reject all icmp packets.
C. Reject all icmp untrusted-host packets.
D. Disable inetd, run ssh and named as standalone daemons.
E. Use tcpwrappers to only allow connections to ports 22 and 53.
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