Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
57 Cards in this Set
- Front
- Back
|
What are the 4 layers of TCP/IP? |
Application, Transport, Internet, and Link Layer
|
|
|
What two protocols reside at the Transport layer of the TCP/IP stack?
|
TCP and UDP
|
|
|
What does the Address Resolution Protocol (ARP) do?
|
translates IP addresses into MAC addresses
|
|
|
What entity is responsible for assigning common port numbers?
|
the Internet Assigned Numbers Authority (IANA)
|
|
|
What port does FTP data use?
|
20
|
|
|
What is port 20 commonly used for?
|
FTP data
|
|
|
What port does FTP control use?
|
21
|
|
|
What commonly uses port 21?
|
FTP control
|
|
|
What port does Telnet use?
|
23
|
|
|
What commonly uses port 23?
|
Telnet
|
|
|
What port does SMTP use?
|
25
|
|
|
What commonly uses port 25?
|
SMTP
|
|
|
What port does DNS use?
|
53
|
|
|
What commonly uses port 53?
|
DNS
|
|
|
What port does Kerberos use?
|
88
|
|
|
What commonly uses port 88?
|
Kerberos
|
|
|
What port does POP3 use?
|
110
|
|
|
What commonly uses port 110?
|
POP3
|
|
|
How many Class A networks are there?
|
126
|
|
|
How many hosts will a Class A network support?
|
~16 million
|
|
|
What is the host ID for a Class A network?
|
1-126
|
|
|
How many Class B networks are there?
|
~16 thousand
|
|
|
How many hosts will a Class B network support?
|
~65,000
|
|
|
What is the host ID for a Class B network?
|
127-191
|
|
|
How many Class C networks are there?
|
~2 million
|
|
|
How many hosts will a Class C network support?
|
254
|
|
|
What is the Host ID for a Class C network?
|
192-223
|
|
|
What is the Class A private use block?
|
10.0.0.0/8
|
|
|
What is the Class B private use block?
|
172.16.0.0-172.31.255.255
|
|
|
What is the Class C private use block?
|
168.168.0.0/16
|
|
|
What is the formula for determining the number of subnets provided by a given subnet mask?
|
# of subnets = 2^n, where n = number of bits in the mask
|
|
|
What is the formula for determining the number of hosts on each subnet provided by a given subnet mask?
|
2^n-2, where n = number of bits in the host portion of the address
|
|
|
What is the formula for determining the subnet numbers for a given subnet mask?
|
256-mask's "interesting octet"; each subnet number will be a multiple of the difference
|
|
|
How many bits are in an IPv6 address?
|
128 bits
|
|
|
What is stateless autoconfiguration?
|
IPv6's ability to configure Internet-usable addresses automatically
|
|
|
How long is an IPv6 header?
|
40 bytes
|
|
|
What component of ISATAP does the IPv6 to IPv4 translation?
|
the hosts
|
|
|
What component of 6to4 does address type translation?
|
6to4 routers
|
|
|
What advantage does Teredo have over ISATAP and 6to4?
|
it works well with NATs
|
|
|
How does Teredo get around issues with NATs?
|
it packages IPv6 packets inside UDP packets
|
|
|
What are the three types of packets used by IPv6?
|
unicast, multicast and anycast
|
|
|
What DNS record type is used for IPv6 addresses?
|
AAAA
|
|
|
How are anycast addresses used?
|
multiple devices receive the same IPv6 address, and the first to receive packets directed to that address claim them
|
|
|
What is the IPv6 loopback address?
|
::1
|
|
|
What is a link-local address?
|
an address usable only on the local network segment (not routable)
|
|
|
What is the prefix for an IPv6 link-local address?
|
FE80::/10
|
|
|
What is the prefix for an IPv6 multicast address?
|
FF00::/8
|
|
|
What protocol replaces ARP in IPv6?
|
Neighbor Discovery
|
|
|
What two pieces make up Neighbor Discovery?
|
Neighbor Solicitation (NS) and Neighbor Advertisement (NA)
|
|
|
What is the prefix for the IPv6 global unicast space?
|
2000::/3
|
|
|
What is a local unicast address?
|
a private IP address, not routable on the Internet
|
|
|
What are the prefixes for the local unicast address space?
|
FC00::/7 or FD00::/8
|
|
|
What is the prefix for the IPv6 multicast address space?
|
FF00::/8
|
|
|
What is the prefix for Teredo addresses?
|
2001::/32
|
|
|
What is the prefix for 6to4 addresses?
|
2002::/16
|
|
|
In ISATAP, are the participating hosts aware of translation?
|
yes (translation performed by hosts)
|
|
|
In 6to4, are the participating hosts aware of translation?
|
no (translation performed by routers)
|
