Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Network+ > Chapter 10: Network Naming > Flashcards

Chapter 10: Network Naming Flashcards

1
Q

How long can Domain names be?

A

up to 255 characters including periods.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where is the hosts file stored in windows?

A

\Windows\System32\Drivers\Etc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are DNS root servers?

A

called “.” or “dot”

-13 powerful DNS servers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are top-level domain servers?

A
  • just below DNS root in the hierarchy

- delegate to thousands of second-level DNS servers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are second-level DNS servers?

A

-support individual computers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What were the original top-level domain servers?

A

-com, org, net, edu, gov, mil, and int

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is a FQDN?

A

Fully qualified domain name

  • complete DNS name
  • root on far right, names of the domains in order to left of the root. Host name far left.
  • “.com” “.net” needed for computers visible on internet
  • not required on a private TCP/IP network
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a DNS server?

A

A server running DNS server software

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a zone?

A

A containter for a single domain that gets filled with records.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a record?

A

line in the zone data that maps a FQDN to an ip address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is an authoritative DNS server?

A
  • lists all host names on the domain and corresponding IP addresses
  • also called Start of Authority(SOA)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is a name server?

A

-subordinate to authoritative DNS server

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where is the DNS info kept in Linux?

A

/etc/resolv.conf

  • where to edit DNS info
  • also a graphical editor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How do you display a cache of recently resolved FQDNs?

A

ipconfig /displaydns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe two types of DNS servers.

A
  • Windows Server 2008: DNS is built in

- Unix/linux systems you can use BIND

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a forward lookup zone?

A
  • ip adddresses and FQDNs for computers in a domain
  • requires a SOA
  • was at least one SOA and one NS record
  • usually have some A record
17
Q

What is a cname?

A

Canonical name

-acts like an alias

18
Q

What is a MX record?

A

-used by SMTP servers to determine where to send mail

19
Q

what is a reverse lookup zone?

A
  • enables system to determine a FQDN by knowing the ip address.
  • pointer records
20
Q

What is an active directory integrated zone?

A
  • NetBT: Netbios over TCP/IP
  • CIFS: Common Internet File System
  • originally called Server Message Block (SMB)
  • Samba: for Unix/Linux makes non-windows systems act like windows.
  • organizes computers into groups.
21
Q

What is a workgroup?

A

-name that organizes groups of computers.

22
Q

Describe a windows domain.

A
  • All computers within domain authenticate to a domain controller.
  • group of computers controlled by computer running windows server.
23
Q

Describe active directory.

A
  • Super domain.
  • Organization of related computers that shares one or more windows domains.
  • no single domain controller.
24
Q

Describe Common Internet File System.

A
  • can’t add records to secondary servers.

- active directory integrated zone all domain servers (DNS servers) are equal.

25
Q

Describe DDNS.

A

Dynamic DNS.
-DNS servers get automatic updates of IP addresses of computers in their forward lookup zones, by talking to local DHCP server.

26
Q

What command forces DNS server to update its records?

A

ipconfig /registerdns

27
Q

Describe DNSSEC.

A

DNS security

-authentication and authorization specification to prevent bad guys from impersonating DNS servers.

28
Q

what is a dynamic DNS server?

A
  • www.tzo.com

- maps home or office router to a domain name.

29
Q

What command eliminates DNS caches on the local system?

A

ipconfig /flushdns

-must remember that web browsers also have caches.

30
Q

what command gives the ip address and name of default DNS server?

A

nslookup

31
Q

Describe DIG.

A

Domain information groper

-similar to nslookup, runs noninteractively

32
Q

Describe WINS.

A
  • NetBIOS names still appear in older versions of windows

- LMHOSTS: text file to reduce overhead from NetBios Broadcasts.

33
Q

How do you troubleshoot WINS.

A

nbstat: helps deal with net bios problems

nbstat -c : check current netbious name cache.

34
Q

How do you troubleshoot TCP/IP networks?

A
  • diagnose the NIC
  • Diagnose locally
  • Check IP address and subnet mask
  • Netstat: all current connections to system.
  • netstat -s: shows statistics to diagnose a problem
  • Diagnose gateway: ping router, try local and internet
  • Diagnose to internet: tracert.

Network+ (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions