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Which of the following are needed for e-mail clients to find their e-mail servers, FTP clients to find their file servers, and Web browsers to find Web servers?
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What do DNS servers use to help resolve IP addresses to DNS names?
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Chapter 10 networkin
| Question | Answer |
|---|---|
| Which of the following are needed for e-mail clients to find their e-mail servers, FTP clients to find their file servers, and Web browsers to find Web servers? | B) DNS servers |
| What do DNS servers use to help resolve IP addresses to DNS names? | D) Reverse lookup zones |
| What do DNS servers use to help resolve DNS names to IP addresses? | D) Forward lookup zones |
| What type of DNS servers do not have any forward lookup zones and will resolve names of systems on the Internet for a network but are not responsible for telling other DNS servers the names of any clients? | A) Cache-only servers |
| What command gives you the IP address and the name of your system’s default DNS server? | B) nslookup |
| What file can be replaced when a network has a WINS server? | B) LMHOSTS |
| What file can be replaced when a network has a DNS server? | A) HOSTS |
| What does adding a WINS proxy agent enable you to accomplish on your network? | D) Cross a router |
| Folders with subfolders on a system, like domain names with subdomains, are said to have a structure resembling what? | C) Root |
| Which of the following commands clears the local cache of DNS entries? | C) ipconfig /flushdns |
| Which variation of the nbtstat command checks the current NetBIOS name cache? | B) nbtstat –c |
| Which of these terms are frequently used interchangeably? | E) Answers A and C A) Domain C) Subdomain |
| Which of the following are valid DNS record entry types? | E) Answers A, C, and D A) A C) NS D) SOA |
| Which of the following is an example of a toplevel domain? | A) .com |
| How do authoritative DNS servers and cacheonly DNS servers differ? | B) Authoritative DNS servers store IP addresses and FQDNs of systems for a particular domain or domains whereas cache-only DNS servers do not store any FQDNs because they are only used to talk to other DNS servers to resolve IP addresses. |
| What do netstat and netstat -s do? | Netstat shows all the current connections on your system. Netstat -s displays useful statistical information. |
| DNS is | a Hierarchical naming system for computers on a network. A DNS server resolves FQDNs to Ip addresses. |
| Name Resolution can be----- | accomplished through broadcasting by consulting the local hosts file or by contacting a DNS server. |
| Top level domains | handles what are known as the top-level domain names. Like .com, .net, gov, etc. |
| Second level DNS servers | handles the millions of names like totalsem.com and whitehouse.gov. |
| Within a simply network usually has one DNS server for the entire network. It has a single zone that list all the host names on the domain and their corresponding Ip addresses. | Authoritative DNS server or SOA |
| The ____ command is used to establish connectivity. | Ping |
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Matthew28
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