ccna 200-301 español

ccna 200-301 español

• 5335 Reviews

The total length field is necessary in the IP header because some data links (such as Ethernet) need to be filled with some data to reach the minimum length. Although Ethernet minimum frame length is 46 bytes (see FIG 2--1 ), but the IP data may be shorter. If the total length field is not, then the IP layer does not know 46 bytes how many IP content datagram. In the TCP / IP world, the encapsulation of Ethernet IP datagrams is defined in RFC 894 [Hornig 1984] and the IP datagram encapsulation of IEEE 802 networks is defined in RFC 1042 [Postel and Reynolds 1988] . Host Requirements The RFC requires that each Internet host be connected to a 10 Mb / s Ethernet cable: 5) is assumed to be an Ethernet, then the sending host must be 32 bit of the IP address into a 48 bit Ethernet address. This minimum length of 60 bytes includes a 14- byte Ethernet frame header, but does not include a 4 -byte Ethernet frame trailer. There are some books as the minimum length of 64 bytes, including the end of the Ethernet frame. We FIG 1--7 in the minimum length as 46 bytes, not including intentionally 14 header byte frame, as corresponding to the maximum length ( 1500 bytes) refers to the MTU - the maximum transmission unit (See Figures 2-5 ). We often use MTU because it limits the length of IP datagrams, but it is generally not related to the minimum length. Most device drivers or interface cards automatically fill Ethernet data frames to the minimum length with padding characters. Of 3 ,ccna 200-301 español, 4 and 5 rows IP datagram (including TCP Segments) are shorter than the minimum length, so they must be padded to 60 bytes. The next output field arp who-has in line 1 indicates that in this data frame as an ARP request, the destination IP address is the address of svr 4 and the IP address of the sending end is the address of bsdi . tcpdump prints the default IP address corresponding to the host name (in Section 4.7 , we will use the -n option to see the real IP address in the ARP request .

Free Download Dumps Demo & Study Tools

Latest Cisco CCNA 200-301 Dumps

If you want to pass the first exam successfully, the next you must take a serious look! All of our dumps are verified by IT certified experts. Our Latest Cisco CCNA 200-301 Dumps contains all the real topics of the day. What is our goal? To help you pass the exam successfully! You can trust us completely, and we will definitely not let you down. You can find us at anytime because we are willing to serve you guys !

Come on! Do your wisely decision!