Network+ Guide to Networks 7th ed. Quiz Ch. 2 – Flashcards
Unlock all answers in this set
Unlock answersquestion
Select the IPv6 address below that indicates a global unicast address:
answer
FE80::10
question
A ________ is a DNS client that requests information from DNS name servers.
answer
resolver
question
What RFC outlines recommendations for private IP addresses?
answer
RFC 1918
question
What two ipconfig commands below are used to show DNS resolver cache information and clear the name resolver cache?
answer
ipconfig /displaydns, ipconfig /flushdns
question
What do the first 24 bits of a MAC address represent?
answer
Organizationally Unique Identifier
question
A loopback IP address begins with what number?
answer
127
question
When two IPv6 nodes are on the same network, they are referred to as which of the following?
answer
neighbors
question
Select the protocol below that is used to synchronize clocks on computers on a network:
answer
NTP
question
What are the last two parts of a host name known as?
answer
domain name
question
Describe the two different types of NAT.
answer
The two different types of NAT are SNAT (Static Network Address Translation) and DNAT (Dynamic Network Address Translation). When a SNAT is used, the gateway assigns the same public IP address to the host every time the host request access to the internet. When a DNAT is used, public IP addresses from a free pool IP addresses is used by the gateway to assign to the local host when a request to use the internet is made.
question
NetBIOS applications should be replaced as they are out-of-date.
answer
True
question
Select the name of the free, open source software that is by far the most popular DNS server software:
answer
BIND
question
Traditional MAC addresses are broken into two parts. Name these two parts.
answer
block ID, device ID
question
ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs.
answer
False
question
What two types of IP addresses are used on the Internet?
answer
IPv4, IPv6
question
A type of DNS data record that is used for reverse lookups, to provide a host name when the IP address is known.
answer
PTR (Pointer) record
question
A type of address translation in which a gateway has a pool of public IP addresses that it is free to assign to a local host whenever the local host makes a request to access the Internet.
answer
Dynamic Network Address Translation (DNAT)
question
The nonprofit corporation currently designated by the U.S. government to maintain and assign IP addresses.
answer
Internet Corporation for Assigned Names and Numbers (ICANN)
question
A type of DNS data record that maps the IPv6 address of an Internet-connected device to its domain name.
answer
AAAA (Address) record
question
A software package or hardware-based tool that can capture and analyze data on a network.
answer
packet analyzer
question
A protocol that runs in the Session and Transport layers of the OSI model and associates NetBIOS names with workstations.
answer
NetBIOS
question
A unique set of characters assigned to each NIC by its manufacturer. In the traditional, 48-bit physical addressing scheme, the extension identifier is 24 bits long. In EUI-64, the extension identifier is 40 bits long.
answer
device ID
question
A service available on computers running one of the Windows operating systems that automatically assigns the computer's network interface a link-local IP address. In IPv4, this address is in the range of 169.254.0.1 through 169.254.255.254.
answer
Automatic Private IP Addressing (APIPA)
question
A type of DNS data record that maps the IPv4 address of an Internet-connected device to its domain name.
answer
A (Address) record
question
A type of address translation in which a gateway assigns the same public IP address to a host each time it makes a request to access the Internet.
answer
Static Network Address Translation (SNAT)
question
What two names are used to describe the configuration in which internal and external DNS queries are handled by different DNS servers or by a single DNS server that is specially configured to keep internal and external DNS zones separate?
answer
split DNS, split-horizon DNS
question
The Network Time Protocol service uses what port number?
answer
UDP 123
question
How many clusters of root servers exist?
answer
13
question
A port number, which identifies an application on a host, exists at what level of the OSI model?
answer
Transport
question
What range of ports is referred to as the "well-known" range of ports?
answer
0-1023
question
What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?
answer
ping
question
What command below can be used to display a complete summary of all network interfaces in a Windows computer?
answer
ipconfig /all
question
________ are not used to find nodes on networks other than the local network.
answer
MAC addresses
question
What is a subnet mask, and how is it used?
answer
A subnet mask is a 32-bit number that helps one computer find another. The 32 bits are used to indicate what portion of an IP address is the network portion and what part is the host portion. Using this information, a computer can know if a remote computer with a given IP address is on its own or a different network.
question
What two address prefixes for IPv6 addresses are used for unique local unicast?
answer
FC00::/7, FD00::/8
question
Which protocol below is used to make an initial connection between hosts for transferring multimedia data, relying on other protocols once a connection is established?
answer
SIP
question
An IPv6 address consists of how many bits?
answer
128
question
The MAC address, which is also known as the ________ address, is embedded on every NIC and is assumed to be unique.
answer
physical
question
What protocol is commonly used to request configuration files from another computer?
answer
TFTP
question
What command on Linux will display TCP/IP information associated with every interface on the device?
answer
ifconfig -a
question
The IP addresses 169.254.0.1 and 169.254.255.254 are both examples of _____________.
answer
Automatic Private IP Addressing (APIPA)
question
DNS follows a centralized database model.
answer
False
question
Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access.
answer
True
question
A __________ consists of a host's IP address and the port number of an application running on a host, with a colon separating the two values.
answer
socket
question
In Linux systems, what file contains the settings for the DHCP service?
answer
dhcpd.conf
question
What top level domain is used for the air-transport industry?
answer
.aero
question
A hexadecimal number is a number written in the base 16 number system.
answer
True
question
Describe how an IPv6 address is written and displayed.
answer
An IPv6 address has 128 bits and is written in eight blocks (quartets) of hexadecimal numbers separated by colons. For example, 2001:4729:5C00:85AC:9A56:C43C:D3AC:0CAC. Each block is 16 bits. If a block is led by a zero it can be eliminated. For example, 2001:4729:5C00:85AC:9A56:C43C:D3AC:CAC. Blocks with all zeros can be written as double colons, but only one set of colons is the preferred use to void confusion in IP address with multiple blocks with only zeros.
