CH9 - Course Quiz Flashcards
Server Message Block uses TCP Port _______ by default?
445
225
137
138
445
Active Directory leans heavily on _______; Active Directory uses it for the DHCP Server to talk to the DNS Server?
host files
NetBIOS
BIND
DDNS
DDNS (Dynamic Domain Name System)
Which record points to the server that holds the records (Zone) for a part of the DNS Tree?
AAAA Record
A Record
CNAME Record
NS Record
NS Record
What UDP Port does DNS Servers primarily use?
90
110
53
80
53
Which servers are subordinate to the Primary Server, but all support the same domain?
active
backup
reverse
secondary
secondary
Which statement is TRUE about DNS Root Servers?
They handle all the name resolution tasks on the Internet.
They are directly below the top-level domain Server.
They delegate the domain-specific name servers.
They do not know any IP Addresses
They delegate the domain-specific name servers.
DNS works similarly in both Private Networks and the Internet?
True
False
True
What entry is made at the command prompt in UNIX/Linux to display DNS Server information?
ipconfig /displaydns
cat /etc/resolv.conf
ipconfig /all
ping /dns
cat /etc/resolv.conf
The power of DNS comes from its incredible flexibility?
True
False
True
Which is a freeform type of DNS record that can be used for anything and allows any text to be added to a zone?
PTR Record
SRV Record
MX Record
TXT Record
TXT Record
If you can’t see the Network using _______, you may have a problem with your NetBIOS Settings?
net send
nbstat
net view
netstat
net view
When the DNS name space is compared to a computer’s file system, a domain is like ________?
a single computer
the hard drive
a folder
the root directory
a folder
The secondary servers in a Network are subordinate to the Primary Server, but all support the same domain?
True
False
True
Which item is part of a fully qualified domain name (FQDN)?
MAC Address
host name
segment ID
IP Address
host name
Which term is an original top-level domain name?
.biz
.prt
.html
.mil
.mil
Describe Iterative Lookup?
Iterative Lookup is a DNS query in which a Name Server contacts a second Name Server to perform a name lookup.
How do you verify the DNS Server settings in Windows?
ipconfig
What is DDNS?
Dynamic DNS (Domain Name System) Enabled DNS Servers to get automatic updates of IP Addresses
Describe the UNIX/Linux DNS Tool - Domain Information Groper (DIG)?
Very similar to nslookup, but it runs noninteractively, meaning you ask it the question.
When you run dig you tend to get large amounts of information.
Is it possible to go beyond Internet Servers with DNS? Explain WHY or WHY NOT.
Yes, it is possible to go beyond Internet Servers with DNS mostly by using DDNS (Dynamic Domain Name System) which allows DNS Servers to get automatic updates of IP Addresses.
A _______ record acts like an Alias?
CNAME (Canonical Name)
At the top of the DNS Hierarchy is the ________?
root
Without NetBIOS, SMB uses TCP Port ________?
445
Windows does a nice job of visualizing cached records by placing all cached lookups in folders that share the first name of the ______, with subfolders that use the name of the second-level domain?
top-level domain
A _________ attaches a piece of data, such as its IP Address , to a name in the DNS tree?
record
A single DNS Server can act as the Authoritative Name Server for only one domain?
True
False
False
A longer TTL means DNS Records will be held in caches longer?
True
False
True
Explanation:
TTL = Time-to-Live
Windows Server uses the term Forward Lookup Zones for Normal Zones and Reverse Lookup Zones for zones that map IP Address to Names?
True
False
True
Which is TRUE of Hosts on the Internet?
Names must include the domain name.
Names must have a common part.
IP Addresses must be unique.
IP Addresses must be the same length.
IP Addresses must be unique.
A Zone is a container for a single domain that gets filled with records?
True
False
True
Which command is used in Windows to eliminate any DNS caches on the local system?
nslookup /flushdns
ipconfig /flushdns
tracert /ipconfig
winipcfg /tracert
ipconfig /flushdns
The term “Host Name” can refer to only the leftmost label of the DNS Name (which is often the computer name) or the whole FQDN?
True
False
True
In the official RFC Language, an A Record is for a “Host Address”?
True
False
True
Which Protocol enables DNS Servers to get automatic updates of IP Addresses of computers in their Forward Lookup Zones, mainly by talking to the local DHCP Server?
ARP
DDNS
NetBIOS over TCP/IP
WINS
DDNS (Dynamic DNS)
Routers have two interfaces?
True
False
True
Those using Unix/Linux have an extra DNS Tool called _________; it is similar to nslookup, but it only runs noninteractively - you ask it a question, it answers the question, and it puts you back at a regular command prompt?
tracerout
zone transfer
reverse lookup
domain information groper
domain information groper (DIG)
Within the DNS Hierarchy, which term refers to the DNS Servers just below the DNS Root?
domain controllers
second-level domain servers
WINS servers
top-level domain servers
top-level domain servers
Describe the difference between a Forward and Reverse Lookup Zone?
Forward Lookup resolves Host Names to IP Addresses.
Reverse Lookup resolves IP Addresses to Host Names.
Explain where names such as .com, .org, .net, .edu, .gov, .mil, and .int fit into the Internet’s Domain Name System (DNS) Hierarchy?
Those are Top-Level Domains and they fit right under the DNS Root Level.
How was Name Resolution handled before the Internet?
Name Resolution was simple using a Text File called Hosts, because ARPANET was only populated by a few dozen computers.
What can be determiend by running netstat with the -s option?
Displays several Statistics by Protocol that help you diagnose problems.
A __________ queries a Name Server with a name to get its associated IP Address?
Resolver
You can see your current DNS Server settings in Windows by typing __________ at the command prompt?
ipconfig /all
In Windows, Run __________ to explor the Route between you and whatever you have been trying to ping?
tracert
The TCP/IP folks came up with a new protocol called __________ in 1997 that enabled DNS Servers to get automatic updates of IP Addresses of computers in their Forward Lookup Zones, mainly by talking to the local DHCP Server?
DDNS (Dynamic DNS)
SMTP Servers use _________ exclusively to determine where to send mail?
MX Records
All operating systems have a version of the ________ tool that enables DNS Server queries?
winipcfg
nslookup
ipconfig
tracert
nslookup
Which term refers to an Authentication and Integrity Protocol designed to prevent bad guys from impersonating legitimate DNS Servers?
WINS
IPSec
Active Directory
DNSSEC
DNSSEC
Which is your “Best Friend” when testing DNS?
CACHE
ping
config
WINS
ping
What enables a system to determine a FQDN by knowing the IP Address?
cached lookups
froward lookup zones
wins
reverse lookup zones
reverse lookup zones
When a computer using NetBIOS booted up, it broadcasted its ____________ along with its MAC Address?
port numbers
NetBIOS name
IP Address
Web Address
NetBIOS Name
Although you can use it independantly if you like, Windows DNS Server is the defualt resolve and name server for ___________ - Microsoft’s batteries-included approach to managing enterprise Networks?
WINS
NetBIOS
NetBEUI
Active Directory
Actrive Directory
Every Fully Qualified Domain Name (FQDN) will always have a ________ on the end to signify the root?
asterisk (*)
period (.)
dash (-)
pound sign (#)
period (.)
Compare the need for common DNS Domain Names, ex. “.com” or “.net” for DNS Names on the Internet as opposed to DNS Names on a Private TCP/IP Network?
Common DNS Names must always end with them but Private TCP/IP Networks can and often do ignore this and use whatever naming scheme they want for their DNS Names.
Describe the TCP/IP Protocol designed by Microsoft that enabled it to keep using NetBIOS names but dump the NetBEUI Protocol?
NetBT was the new protocol that Microsoft designed to fix the problem that there was a massive installed base of Windows Networks that still needed NetBIOS.
What is the main advantages of DNS?
- No Need for memorizing IP Addresses
- DNS Servers have fast connections.
- Without DNS, we probably wouldn’t have the Internet.
The ARPANET implemented name resolution using a special text file called _________?
hosts
Just below the DNS Root in the global hierarchy is a set of DNS Systems - called the ___________ domain servers - that handle top-level domain (TLD) Names?
top-level
When a DNS Server also acts as the recursive resolve, it performs DNS ________ for the network, temporarily storing information about previous DNS Lookups?
caching
