Test
tema 11
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (27)
1The bits within the network portion of the address must be [blank_start]identical[blank_end] for all devices that reside in the same network. The bits within the host portion of the address must be [blank_start]unique[blank_end] to identify a specific host within a network. If two hosts have the same bit-pattern in the specified network portion of the 32-bit stream, those two hosts will reside in the same network.
- Aidentical
- Bunique
2The IPv4 subnet mask is used to [blank_start]differentiate[blank_end] the network portion from the host portion of an IPv4 address. When an IPv4 address is assigned to a device, the subnet mask is used to determine the network [blank_start]address of the device[blank_end]. The network address represents all the devices on the same network.
- Adifferentiate
- Baddress of the device
3?
- AVerdadero
- BFalso
4???
- Agrg
5TODAS SON CORRELATIVAS
hasta 24 es sencillo, 8 bits por cada serie de número
después
recuerda binario
128 64 32 16 8 4 2 1
25 = 128
26 = 128 +64 (192
27= 128 +63 +32 (224
28 = 128+63+32+16 (240
- Aok
6KEY ACERCA DE LAS ADDRESS
la primera del rago (xxx.xxx.xxx.1) es siempre usada por el gateway
la ultima del rango (.255) es siempre briadcast o lo que es lo mismo (.11111111)- AVerdadero
- BFalso
7Binary ANDing
es un proceso por el cual mediante la subnet y la ip address un device conoce la network a la que pertenece
- AVerdadero
- BFalso
8 The host portion of the address is the bits indicated by 0 bits in the subnet mask. Host addresses can have any combination of bits in the host portion except for all 0 bits (this would be a network address) or all 1 bits (this would be a broadcast address).
- AVerdadero
- BFalso
9ejercico de ANDing
fijate
- Aok
10IPv4 unicast host addresses are in the address range of 1.1.1.1 to 223.255.255.255
- AVerdadero
- BFalso
11 there are no broadcast packets with IPv6.
- AVerdadero
- BFalso
12By default, routers do not forward broadcasts.
- AVerdadero
- BFalso
13 255.255.255.255 broadcast address,
- AVerdadero
- BFalso
14lee con atencion
IP Directed Broadcasts
In addition to the 255.255.255.255 broadcast address, there is a broadcast IPv4 address for each network. Called a directed broadcast, this address uses the highest address in the network, which is the address where all the host bits are 1s. For example, the directed broadcast address for 192.168.1.0/24 is [blank_start]192.168.1.255[blank_end]. This address allows communication to all the hosts in that network. To send data to all the hosts in a network, a host can send a single packet that is addressed to the broadcast address of the network.
A [blank_start]device that is not directly connected[blank_end] to the destination network [blank_start]forwards an IP directed broadcast[blank_end] in the same way it would forward unicast IP packets destined to a host on that network. When a directed broadcast packet [blank_start]reaches a router[blank_end] that is directly connected to the destination network, [blank_start]that packet is broadcast[blank_end] on the destination network.
Note: Because of security concerns and prior abuse from [blank_start]malicious users[blank_end], directed broadcasts are turned off by default starting with Cisco IOS Release 12.0 with the global configuration command [blank_start]no ip directed-broadcasts[blank_end]- A192.168.1.255
- Bdevice that is not directly connected
- Cforwards an IP directed broadcast
- Dreaches a router
- Ethat packet is broadcast
- Fmalicious users
- Gno ip directed-broadcasts
15 IPv4 has reserved the 224.0.0.0 to 239.255.255.255 addresses as a multicast range.
- AVerdadero
- BFalso
16Each multicast group is represented by a single IPv4 multicast destination address
- AVerdadero
- BFalso
17 reserved OSPF multicast address 224.0.0.5
- AVerdadero
- BFalso
18fijate esas direcciones son de uso privado
- Aok
19Before the ISP can forward this packet, it must [blank_start]translate[blank_end] the source IPv4 address, which is a private address, to a [blank_start]public IPv4 address[blank_end] using Network Address Translation (NAT). [blank_start]NAT[blank_end] is used to translate between private IPv4 and public IPv4 addresses. This is usually done on the router that connects the internal network to the ISP network. Private IPv4 addresses in the organization’s intranet will be translated to public IPv4 addresses before routing to the internet.
- Atranslate
- Bpublic IPv4 address
- CNAT
20Link-local addresses [blank_start](169.254[blank_end].0.0 /16 or 169.254.0.1 to 169.254.255.254) are more commonly known as the Automatic Private IP Addressing [blank_start](APIPA[blank_end]) addresses or self-assigned addresses. They are used by a Windows DHCP client to self-configure in the event that there are no DHCP servers available.
- A(169.254
- B(APIPA
21fijate como se divide la net 172.16.0.0 /16 en dos subnets
172.16.0.0 /24
172.16.1.0 /24
recuerda como se asigna el prefijo
x.x.x.x
1111111.11111111.11111111.11111111. 255.255.255.255
11111111.11111111.11111111.0000 host 255.255.255.0
- Aok
22fijate se ha subneteado en funcion a las plantas de edificio en lugar de una net total de cientos de hosts tipo
10.0.host.host/16
cada subnet tiene un máximo de 254 host posibles
- Aok
23subnet
Subnet Address
(256 Possible Subnets) Host Range
(65,534 possible hosts per subnet) Broadcast
10.0.0.0/16 [blank_start]10.0.0.1[blank_end] - [blank_start]10.0.255.254[blank_end] [blank_start]10.0.255.255[blank_end]
10.1.0.0/16 10.1.0.1 - 10.1.255.254 10.1.255.255
10.2.0.0/16 10.2.0.1 - 10.2.255.254 10.2.255.255
10.3.0.0/16 [blank_start]10.3.0.1[blank_end] - [blank_start]10.3.255.254[blank_end] [blank_start]10.3.255.255[blank_end]
10.4.0.0/16 10.4.0.1 - 10.4.255.254 10.4.255.255
10.5.0.0/16 10.5.0.1 - 10.5.255.254 10.5.255.255
10.6.0.0/16 10.6.0.1 - 10.6.255.254 10.6.255.255
10.7.0.0/16 10.7.0.1 - 10.7.255.254 10.7.255.255
... ... ...
10.255.0.0/16 10.255.0.1 - 10.255.255.254 10.255.255.255- A10.0.255.255
- B10.0.0.1
- C10.0.255.254
- D10.3.0.1
- E10.3.255.254
- F10.3.255.255
24Subnet Address
(65,536 Possible Subnets) Host Range
(254 possible hosts per subnet) Broadcast
10.0.0.0/24 [blank_start]10.0.0.1[blank_end] - [blank_start]10.0.0.254[blank_end] [blank_start]10.0.0.255[blank_end]
10.0.1.0/24 10.0.1.1 - 10.0.1.254 10.0.1.255
10.0.2.0/24 10.0.2.1 - 10.0.2.254 10.0.2.255
… … …
10.0.255.0/24 10.0.255.1 - 10.0.255.254 10.0.255.255
10.1.0.0/24 10.1.0.1 - 10.1.0.254 10.1.0.255
10.1.1.0/24 10.1.1.1 - 10.1.1.254 10.1.1.255
10.1.2.0/24 10.1.2.1 - 10.1.2.254 10.1.2.255
… … …
10.100.0.0/24 [blank_start]10.100.0.1[blank_end] - [blank_start]10.100.0.254[blank_end] [blank_start]10.100.0.255[blank_end]
... ... ...
10.255.255.0/24 [blank_start]10.255.255.1[blank_end] - [blank_start]10.2255.255.254[blank_end] [blank_start]10.255.255.255[blank_end]- A10.0.0.1
- B10.0.0.254
- C10.0.0.255
- D10.100.0.1
- E10.100.0.254
- F10.100.0.255
- G10.255.255.1
- H10.2255.255.254
- I10.255.255.255
25fijate como se hace
notar que en cada salto se dobla el número de host y se añade 2.
- Aok
26/25 row - Borrowing 1 bit from the fourth octet creates [blank_start]2[blank_end] subnets supporting [blank_start]126[blank_end] hosts each.
/26 row - Borrowing 2 bits creates [blank_start]4[blank_end] subnets supporting [blank_start]62[blank_end] hosts each.
/27 row - Borrowing 3 bits creates [blank_start]8[blank_end] subnets supporting [blank_start]30[blank_end] hosts each.
/28 row - Borrowing 4 bits creates [blank_start]16[blank_end] subnets supporting [blank_start]14[blank_end] hosts each.
/29 row - Borrowing 5 bits creates [blank_start]32[blank_end] subnets supporting [blank_start]6[blank_end] hosts each.
/30 row - Borrowing 6 bits creates [blank_start]64[blank_end] subnets supporting [blank_start]2[blank_end] hosts each.- A2
- B62
- C30
- D14
- E6
- F2
- G126
- H4
- I8
- J16
- K32
- L64
27Class C Mask = 255.255.255.0 /24
Class B Mask = 255.255.0.0/16
Class A Mask = 255.0.O.O/8- AVerdadero
- BFalso
Información
- Descripción
- 1 TEMA 10 - IPv4 Addressing Test sobre tema 11 , creado por Alejandro López Villar el 18/01/2021.
- Idioma
- English
- Visitas
- 8
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test