A network technician needs to protect IP based servers in the network DMZ from being discovered by an intruder utilizing a ping sweep. Which of the following should the technician do to protect the network from ping sweeps?
A. Block echo replies inbound to the DMZ
B. Disable UDP on the servers
C. Block ICMP at the firewall
D. Disable TCP/IP on the server
Answer: C. Block ICMP at the firewall
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The lack of authentication for computers on the Internet make IP _____________ possible, which is a change in the IP addresses in the headers of malicious packets.
Fill in the blank(s) with the appropriate word(s).
A good practice is to save your work every ____
A. 10-20 seconds B. 1-2 minutes C. 5-10 minutes D. 20-30 minutes
Comments are usually preceded by a specific symbol.
Answer the following statement true (T) or false (F)
Mesh networks:
a. usually provide relatively long routes through the network (compared to ring networks) b. require more processing by each computer in the network than in star or ring networks c. do not use decentralized routing d. do not have much capacity wasted by network status information e. do not have many possible routes through the network to prevent one circuit from becoming overloaded