What are the default passwords used by SNMP? (Choose two.)
Besides the fact that it passes information in clear text,SNMP also uses well-known passwords. Public and private are the default passwords used by SNMP.
Which of the following ICMP message types are used for destinations unreachables?
Type 3 messages are used for unreachable messages. 0 is Echo Reply,8 is Echo request,11 is time exceeded,13 is timestamp and 17 is subnet mask request. Learning these would be advisable for the test.
What is the proper response for a FIN scan if the port is closed?
Closed ports respond to a FIN scan with a RST.
What is the proper response for a X-MAS scan if the port is closed?
F. No response
Closed ports respond to a X-MAS scan with a RST.
What flags are set in a X-MAS scan?(Choose all that apply.
FIN,URG,and PSH are set high in the TCP packet for a X-MAS scan
Which of the following is an automated vulnerability assessment tool?
A. Whack a Mole
Nessus is a vulnerability assessment tool.
John is using a special tool on his Linux platform that has a signature database and is therefore able to detect hundred of vulnerabilities in UNIX, Windows, and commonly-used web CGI scripts. Additionally, the database detects DDoS zombies and Trojans. What would be the name of this multifunctional tool?
Nessus is the world’s most popular vulnerability scanner,estimated to be used by over 75,000 organizations world-wide. Nmap is mostly used for scanning,not for detecting vulnerabilities. Hping is a free packet generator and analyzer for the TCP/IP protocol and make is used to automatically build large applications on the *nix plattform.
What is the disadvantage of an automated vulnerability assessment tool?
C. Prone to false positives
D. Prone to false negatives
Vulnerability assessment tools perform a good analysis of system vulnerabilities;
however,they are noisy and will quickly trip IDS systems.
What are two things that are possible when scanning UDP ports? (Choose two.
A. A reset will be returned
B. An ICMP message will be returned
C. The four-way handshake will not be completed
D. An RFC 1294 message will be returned
Closed UDP ports can return an ICMP type 3 code 3 message. No response can mean the port is open or the packet was silently dropped.
What does a type 3 code 13 represent?(Choose two.
A. Echo request
B. Destination unreachable
C. Network unreachable
D. Administratively prohibited
E. Port unreachable
F. Time exceeded
Type 3 code 13 is destination unreachable administratively prohibited. This type of message is typically returned from a device blocking a port.
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