networking ch 5

Question 1

Classful Masks

Answer 1

a default subnet mask applied to class A,B and C IPv4. specifically class A= 255.0.0.0. Class B= 255.255.0.0. Class C= 255.255.255.0.

Question 2

Private IP Address

Answer 2

Class A,B and C have been designed for private use. although these networks are routable (except 169.254.0.0-169.254.255.255 address range) within the organization, services providers do not route these private networks over the public internet

Question 3

Octet

Answer 3

a grouping of 8 bits. an IPv4 address has 4 octets. that is 32 bits.

Question 4

Prefix Notation

Answer 4

a method of indicating how many bits are in a subnet mask. EX. /24 is prefix notation for a 24-bit subnet mask. also known as a slash notation

Question 5

Slash Notation

Answer 5

same as prefix notation. EX. /24 means 24-bit subnet mask.

Question 6

Dotted-Decimal Notation

Answer 6

method of writing an IPv4 address or subnet mask, where groups of 8 bits (octets) are separated by periods

Question 7

Default Gateway

Answer 7

the IP address of a router (or multilayer switch) to which a network device sends traffic destined for a subnet other than the devices local subnet

Question 8

Boot Strap Protocol (BOOTP)

Answer 8

a legacy broadcast based protocol used by network devices to obtain IP address info

Question 9

Dynamic Host Configuration Protocol (DHCP)

Answer 9

preforms the task of taking a domain name and resolving that name into a corresponding IP address (EX. 10.1.2.3)

Question 10

Zeroconf

Answer 10

assigns link-local IP addresses , resolves computer names to IP addresses , locating network services

Question 11

Link-Local IP address

Answer 11

non-routable IP address usable only on a local subnet

Question 12

Automatic Private IP Addressing (APIPA)

Answer 12

allows a networked device to self assign an IP address from the 169.254.0.0/16 network. this address is only usable on the devices local subnet (the IP address in non routable)

Question 13

Borrowed Bits

Answer 13

bit added to a classful subnet mask

Question 14

Block Size

Answer 14

The number of IP addresses in s subnet, including the subnets address and the subnets direct broadcast address

Question 15

Classless Interdomain Routing (CIDR)

Answer 15

shortens a classful subnet mask by removing right justified 1’s from the classified mask. allows contiguous classful networks to be aggregated. sometimes called route aggregation

Question 16

Unicast

Answer 16

a one on one flow

Question 17

Multicast

Answer 17

a value assigned to a router, lower metrics are preferred over higher.

Question 18

Anycast

Answer 18

flow of one to nearest (from the perspective of a routers routing table) flow