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Principles of Computer Networks > Chapter 9 - Network Naming > Flashcards

Chapter 9 - Network Naming Flashcards

1
Q

The _______ command is used to establish connectivity.

A

ping

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2
Q

The ________ protocol originally ran on top of NetBT, but today runs by itself and uses port 445.

A

Server message block (SMB)

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3
Q

The term ______ refers to networks that use DNS belonging to the same DNS system.

A

DNS tree

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4
Q

A helpful command that displays TCP/IP naming information is ______.

A

ipconfig

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5
Q

A DNS forward lookup zone uses a(n) ________ for individual host records.

A

A Record

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6
Q

To connect to systems on the internet using domain names, your network needs the name of at least one __________.

A

DNS Root server

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7
Q

The _____ gets precedence over querying a DNS server.

A

Host file

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8
Q

You can use the diagnostic utility called __________ to trace the progress of an ICMP packet between your system and a remote computer.

A

tracert

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9
Q

To avoid having to re-resolve an FQDN that it has already checked, a Windows DNS server keeps a list of IP addresses it has already resolved, called __________.

A

cached lookups

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10
Q

The single DNS server that has a list of all the host names on the domain and their corresponding IP addresses is the __________.

A

authoritative DNS server

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11
Q

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?

A. DHCP servers

B. DNS servers

C. E-mail servers

D. WINS servers

A

DNS servers

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12
Q

What do DNS servers use to help resolve IP addresses to DNS names?

A. Authentication

B. Authorization

C. Backward lookup zones

D. Reverse lookup zones

A

Reverse lookup zones

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13
Q

What do DNS servers use to help resolve FQDNs to IP addresses?

A. Accounting

B. Administration

C. Backward lookup zones

D. Forward lookup zones

A

Forward lookup zones

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14
Q

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

B. Primary servers

C. Secondary servers

D. WINS servers

A

Cache-inly servers

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15
Q

Running what command gives you the IP address and the name of your system’s default DNS server?

A. nbtstat

B. nslookup

C. ping

D. winword

A

nslookup

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16
Q

What file can you modify to resolve a name that takes effect regardless of the DNS server records?

A. hosts

B. SYSLOG

C. SAM

D. WIN

A

hosts

17
Q

Which of the following ports is used by Windows to support pre-DNS naming protocols?

A. TCP port 443

B. TCP port 138

C. UDP port 445

D. TCP port 137

A

TCP port 137

18
Q

What does adding a caching-only DNS server accomplish on your network?

A. Provides a backup DNS server

B. Allows your hosts to broadcast DNS

C. Speeds up DNS resolution

D. Replaces your DHCP server

A

Speeds up DNS resolution

19
Q

Folders with subfolders on a system, like domain names with subdomains, are said to have a structure resembling what?

A. Branch

B. Forest

C. Root

D. Tree

A

Root

20
Q

Running which of the following commands clears the local cache of DNS entries?

A. ipconfig /clear

B. ipconfig /cls

C. ipconfig /flushdns

D. ipconfig /renew

A

ipconfig /flushdns

21
Q

What port does DNS use?

A. 53

B. 137

C. 138

D. 445

A

53

22
Q

Which of these terms are frequently used interchangeably? (Select two.)

A. Domain

B. Folder

C. Subdomain

D. Zone

A

Domain & subdomain

23
Q

Which of the following are valid DNS record entry types? (Select three.)

A. A

B. M

C. NS

D. SOA

A

A, NS, & SOA

24
Q

Which of the following is an example of a top-level domain?

A. .com

B. totalsem.com

C. support.totalsem.com

D. houston.support.totalsem.com

A

.com

25
Q

How do authoritative DNS servers and cache-only DNS servers differ?

A. Authoritative DNS servers contain forward lookup zones, whereas cache-only DNS servers contain only reverse lookup zones.

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 static FQDNs because they are only used to talk to other DNS servers to resolve IP addresses.

C. Authoritative DNS servers service requests for top-level domains, whereas cache-only DNS servers service requests for down-level domains.

D. Authoritative DNS servers are found only in Windows Active Directory networks, whereas cache-only DNS servers are found universally throughout the Internet.

A

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 static FQDNs because they are only used to talk to other DNS servers to resolve IP addresses.

Principles of Computer Networks (12 decks)

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