Chapter 2: Reconnaissance and Intelligence Gathering
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1. D. DNS zone transfers provide a method to replicate DNS information between DNS servers, but they are also a tempting target for attackers due to the amount of information that they contain. A properly secured DNS server will only allow zone transfers to specific, permitted peer DNS servers. DNSSEC is a suite of DNS security specifications, AXR is a made up term (AXFR is the zone transfer command), and DNS registration is how you register a domain name.
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2. C. Nmap’s operating system identification flag is –o. This enables OS detection. –A also enables OS identification and other features. –osscan with modifiers like –limit and –guess set specific OS identification features. –os and –id are not nmap flags.
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3. B. Traceroute (or tracert on Windows systems) is a command-line tool that uses ICMP to trace the route that a packet takes to a host. Whois and nslookup are domain...