Ensurepass

QUESTION 101

Which protocol is used by ping?

A. TCP

B. UDP

C. SMB

D. ICMP

E. OSPF

Answer: D


QUESTION
102 CORRECT TEXT

What is the command most often used for configuring network interfaces?

Answer: ifconfig


QUESTION
103

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——-

Answer: C


QUESTION
104

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

Answer: D


QUESTION
105

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?

A. ps

B. netstat

C. nsloopup

D. ifconfig

E. traceroute

Answer: E


QUESTION
106

According to the PPP HOWTO which piece of software could help you test a modem?

A. chat

B. dhcpd

C. minicom

D. Hylafax

E. netconfig

Answer: C


QUESTION
107

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.

Answer: B


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.

Answer: ip_forward


QUESTION
109

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.

Answer: A


QUESTION
110

You want a secure and fast DNS server that must also be quickly accessible remotely.

You should:

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.

Answer: D,E

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