Saturday, 21 April 2018

What is the term for the servers just below the DNS root servers?

1. (p. 261) What is the term for the servers just below the DNS root servers? 
A. domain controllers
B. second-level domain server
C. top-level domain servers
D. WINS server

2. (p. 261) Which of the following statements is true about DNS root servers?
A. They handle all the name resolution tasks of the Internet.
B. They have the complete definitive name resolution table.
C. They are directly below the top-level domain server.
D. They do not know any IP addresses.

3. (p. 265) Which of the following is the record type for an authoritative DNS server?
A. BIND
B. SOA
C. FQDN
D. A

4. (p. 276) How does NetBIOS identify a computer system on the network? Select all that apply.
A. By using the MAC address
B. By using the IP address
C. By using a computer name
D. By using a port number

5. (p. 276) Which of the following is the latest version of Microsoft's folder- and printer-sharing protocol?
A. NetBIOS/NetBEUI
B. NetBIOS
C. WINS
D. CIFS

6. (p. 262) What term best describes the way the DNS name space is organized?
A. hierarchical
B. flat
C. tree-like
D. domain

7. (p. 263-264) Which of the following characters is not permitted in a DNS domain or host name?
A. Upper and lower case letters
B. Spaces
C. Numbers
D. Hyphens

8. (p. 263) In the syntax for a domain name, what character or characters separates a domain name from its subdomains?
A. /
B. //
C. \
D. .

9. (p. 263) Which is the correct sequence according to the DNS naming convention?
A. root.domain.host
B. domain.host.root
C. host.domain.root
D. domain.root.host

10. (p. 265) Including the separators, what is the maximum number of characters allowed by the DNS naming convention?
A. 128
B. 15
C. 80
D. 255

11. (p. 269) How is the address 127.0.0.1 listed in the HOSTS file?
A. loopback
B. localhost
C. root
D. gateway

12. (p. 275) What enables a DNS server to determine an FQDN by knowing the IP address?
A. reverse lookup zones
B. cached lookup
C. WINS
D. forward lookup zones

13. (p. 280) What is the best tool for testing DNS?
A. ipconfig
B. ping
C. tracert
D. nslookup

14. (p. 261) Which of the following is not a top-level domain name?
A. .com
B. .html
C. .mil
D. .net

15. (p. 262) What organization oversees the registration of domain names?
A. ICANN
B. IEEE
C. IANA
D. IETF

16. (p. 264) Which of the following is not part of a fully qualified domain name (FQDN)?
A. the host name
B. the second-level domain name
C. the top-level domain name
D. the IP address

17. (p. 282) Which two of the following represent two strategies Microsoft used to solve the problem of resolving NetBIOS names to IP addresses without using broadcasting? (Select all that apply.)
A. DNS
B. WINS
C. ARP
D. LMHOSTS
E. Both B and D

18. (p. 273) On an authoritative DNS server, what are the storage areas called that hold the IP addresses and names of systems for a particular domain or domains?
A. forward lookup zones
B. DNS cache
C. cached lookups
D. Start of Authority

19. (p. 280) Which of the following would confirm that you have a DNS problem?
A. Ping returns a "request timed out" message.
B. Ping works with the IP address but not with the FQDN.
C. Ping does not work with either an IP address or a Web site address.
D. The DNS resolver cache is empty.

20. (p. 280) What program, available with Windows (except 9x), Linux, and NetWare, provides all types of information from a DNS server and allows you to change how your system uses DNS?
A. ipconfig
B. winipcfg
C. tracert
D. nslookup

21. (p. 282) What type of server resolves NetBIOS names to IP addresses?
A. DNS
B. DHCP
C. ARP
D. WINS

22. (p. 283) Which of the following is a situation in which a network with NetBIOS clients would not need to use WINS?
A. It can broadcast across its entire network.
B. It is running NetBIOS
C. It is part of a larger network with multiple segments.
D. It includes Windows 9x systems that are not DNS clients.

23. (p. 282) How do WINS servers learn the NetBIOS names of computers on the network?
A. The computers broadcast their names.
B. The server uses the LMHOSTS file.
C. The computers register their names with the WINS server.
D. Through DNS name resolution.

24. (p. 284) Which of the following is the most common WINS/NetBIOS problem?
A. The client does not know the IP address of the WINS server
B. Two systems share the same name.
C. The WINS proxy agent is not working.
D. The LMHOSTS file is corrupted.

25. (p. 284) What command can you use to check the current NetBIOS name cache to see if it has provided inaccurate addresses to the WINS client?
A. nbtstat -c
B. ifconfig eth0 up
C. winipcfg/renew
D. nslookup -c

26. (p. 285) What command-line command allows you to see other NetBIOS systems?
A. netstat
B. nbtstat
C. net view
D. net send

27. (p. 273) What kind of DNS server has no responsibility for giving the names of its clients to other DNS servers?
A. cache-only server
B. WINS server
C. DHCP server
D. authoritative server

28. (p. 262) Which of the following is true of the names in a flat name space?
A. All must be the same length.
B. All must have a common part.
C. Each must include the domain name.
D. Each must be unique.

29. (p. 276) Which statement is true about NetBIOS name broadcasts?
A. The host sends the message to the default gateway.
B. The host sends the message to all machines on the local network.
C. The host sends the message to the designated destination only.
D. The host sends the message to the router.

30. (p. 279) Which type of forward lookup zone exists on a DNS server that acts as a backup?
A. primary
B. secondary
C. backup
D. reverse

31. (p. 279) Which technology allows DNS servers to query DHCP servers for host IP addresses?
A. WINS
B. Dynamic DNS
C. HOSTS files
D. LMHOSTS files

32. (p. 278-279) Which file requires manual updates if Dynamic DNS is not used?
A. zone files
B. HOST files
C. LMHOSTS files
D. CNAME files

33. (p. 279) Which technology allows DNS clients to automatically update DNS servers?
A. WINS
B. NetBIOS
C. HOSTS
D. Dynamic DNS

34. (p. 278) Which type of DNS allows the zone information to be stored across multiple domain controllers?
A. Active Directory-integrated zones
B. secondary zones
C. primary zones
D. recursive zones


35. (p. 279) Which service would allow home or office networks that may change IP addresses to be contacted via domain names?
A. NetBIOS over TCP/IP
B. WINS
C. Dynamic DNS
D. ARP

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