at 2. Which service is needed on a network using private IP addresses? A. NAT B. DNS C. UDP D. ICMP 3. While reviewing network traffic entries, you do not recognize an IP address. How can you find who was issued this IP address? A. Use the WHOIS tool. B. Run netstat - to show foreign addresses. C. Contact the IANA. D. Use the nslookup command to query DNS. 4. Which is the shortest acceptable form of this IPv6 address? Fe80:0000:0000:2B2A:0000:0000:023C:1120 A. Fe80::2b2A::023C:1120 B. Fe80::2B2A:0:0:23C:1120 C. Fe80:0:0:2B2A:0:0:023C:1120 D. Fe80::2b2A:0:0:023C:112 5. While running a packet capturing program, you notice this IPv6 address: 2001:23AA:12CD. What can you determine from this address? A. Nothing, the subnet mask is not visible. B. The address is a site-local and originated on your own network. C. The address was automatically generated with the TCP/IP protocol as it is a link-local address. D. This address is a global unicast and is consid- ered a public IP address. ea