livro cisco 200-301

livro cisco 200-301

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z With CIDR, instead of using the full subnet mask, you write down the number of binary bits used. For 255.255.0.0, for example, there are two lots of eight binary bits used, so this would be represented with a /16. For 255.255.240.0, there are 8 + 8 + 4 bits used, giving you /20. You need never concern yourself about running out of host bits per subnet because each subnet has over 18 quintillion hosts. It’s unlikely that any organization would ever run out of subnets, but even if this were the case, another global routing prefix could easily be provided by the ISP. 　reliability 255/255, txload 1/255,livro cisco 200-301, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) However, keep in mind that it is possible to specify which VLAN will not have frames tagged by specifying that VLAN as the native VLAN on a particular trunk link. For example, to prevent tagging of frames in VLAN 400 when using 802.1Q, you would configure that VLAN as the native VLAN on a particular trunk. IEEE 802.1Q native VLAN configuration will be illustrated in detail later. Topology 172.16.0.0 The Multicast addresses used in IPv6 are derived from the FF00::/8 IPv6 prefix. In IPv6, Multicast operates in a different manner than that of Multicast 64016384 bytes total (60958336 bytes free) SwitchA# Switching Frames 3.Hosts within the same VLAN cannot reach each other: It is important that hosts in a VLAN have an IP address that belongs to the same subnet. If the subnet is different, then they will not be able to reach each other. Another Flexibility in expanding a network across a geographical location of any size. For example, it does not matter where in the building a PC is. It thinks it is on the same segment of the network as any other PC configured DCE cable, no clock rate IPv6 prefix advertisement uses ICMPv6 Router Advertisement messages, which are sent to the all-hosts-on-the-local-link IPv6 Multicast address FF02::1. By design, only routers are allowed to advertise prefixes on the local link. When stateless autoconfiguration is employed, it is imperative to remember that the prefix length used must be 64 bits (e.g., 2001:1a2b::/64). Class D addresses range from 224.0.0.0 to 239.255.255.255 and are used for multicasting (directed broadcasts). Class E addresses range from 240.0.0.0 to 255.255.255.254 and are for experimental use only. 126.200.133.1 R2#show interface FastEthernet0/0 FastEthernet0/0 is up, line protocol is up 126.200.133.1 Duplicate Address Detection is an NDP mechanism used in stateless autoconfiguration when a host on the network segment is booting up. DAD mandates that before a network host permanently configures its own IPv6 address during boot up, it should validate that another network host is not already using the IPv6 address it wants to use. Administrative Mode: dynamic auto Hex = 14 Switch1#conf t In order to provide enough addresses for our needs many years into the future, IPv6 has been designed to provide many trillions of available addresses. In order to do this, the numbering range has been expanded from 32 binary bits to 128 bits. Every 4 bits can be represented as one hex digit (as can be seen from the chart above). Logic then dictates that two hex digits will give us 8 bits, which is a single byte, or octet.

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