Chapter 3

You are troubleshooting a DNS issue on a Linux system, and need to test the resolution of your domain mycompany.com MX record using Google's DNS server with the IP address of 8.8.8.8. What dig command will accomplish this? *

dig @8.8.8.8 mycompany.com MX

When using DHCP for IPv6 (i.e. DHCPv6), what port do clients receive responses on

port 547

In the classful addressing scheme, what range of network addresses is considered a Class B?

128.0.x.y to 191.255.x.y

ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs.

False (IANNA)

What is the ARPA domain suffix utilized for?

It is used for reverse DNS queries, and holds PTR records.

What command can you utilize to display TCP/IP configuration information for each network adapter installed?

ipconfig /all

What command can be used to check a domain computer's time source from a Command Prompt window?

w32tm /query /source

Which of the following is NOT a range of IP addresses recommended for use in private networks?

127.0.0.0 through 127.255.255.255

In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses?

AAAA Record

The 1024 - 65535 range of ports is also known as the "well-known" range

False

In the DNS hierarchy, where is information about how to find the top-level domain servers held?

In the organization's forward lookup zone

What does the MX record do in a forward DNS zone?

It identifies the e-mail server to be used for e-mail traffic for the domain.

What statement regarding the Server Message Block protocol is accurate?

It is used by Windows and UNIX-based operating systems to share files.

How do routers create a broadcast domain boundary? *

They do not forward broadcast traffic.

At the root level of the DNS hierarchical structure, 13 clusters of root servers hold information used to locate TLD servers.

True

UDP port 123 is utilized by the Network Time Protocol service.

True

Your supervisor has asked you to configure a new prototype network with a dual stack configuration. What does this mean?

Both IPv4 and IPv6 protocols will be used on the network.

Encrypted control of remote computers using the RDP protocol is accomplished using what port number? *

TCP 22

You are troubleshooting a network issue on a client computer and discover that the network card has an IP address of 169.254.196.200. What does this mean?

The computer is configured to use DHCP, but was unable to lease an address.