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What value in the address field of frame relay header identifies the destination of the frame?
DLCI
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What value in the address field of a Frame Relay header identifies the destination of the frame?
DLCI
Which field in the layer 2 header is used to verify the data has not been corrupted in transmission?
Destination address
Which field are contained within an IEEE Ethernet frame header?
1)Source and destination MAC Address 2)FCS Field
In IPv6 which field is used in conjunction with the authentication header and the destination address to identify the security association to be implemented for the AH?
SPI field
What is significant about the contents of the destination address field?
The destination address field in a frame refers to the physical (or MAC) address of the destination node.
What is tcpip header and trailer?
An Ethernet frame has a 14 byte header, a data section, and a 4 byte trailer 14 byte header consist of destination address, source address and type The trailer is for CRC (Cyclic redundancy Check) An Ethernet frame can contain an IP and TCP PDU. IP header most important parts consists of (Version,IHL, Total length,Protocol, source and destination address) In details (Version,Header length,Differentiated services field, total Length, Identification, Flags, fragment offset, Time to live, protocol, header checksum, source and destination address). TCP header most important parts consists of (Source port, Destination port and header Length) In details (Source Port, Destination Port, Sequence number, Acknowledgment number, Header length,Flags,Window and check sum). The details of the IP and TCP header have been taken from a Network protocol Analyzer Wireshark on my own pc.
Which field in an IPv4 packet header will typically stay the same during its transmission?
Destination Address (I.P. ) will stay the same during transmission. But be careful! Only if it is Ip address. However if it is MAC it will change as it travels thru diferent routers with different MAC addresses to get to the destination Ip address (which does not change)!
What does the protocol field in the IP header identify?
The protocol field, in the IP header, identifies what kind of data is in the IP packet - the upper-layer protocol. For example, if the code is 6, that means that the data is a TCP segment.
What is the role of the address field in a packet travelling through a datagram?
There are two address fields. Source is the IP address the packet came from and destination is the IP address the packet is meant to be delivered to.
What field of the IP header does the Tracert program use to get the IP address of routers in the path?
it uses the time-to-live (TTL) field.
What is the parts of header?
1)Header Length 2)Types of services 3)ID field 4)Flags 5)Offset 6)Total length 7)Time To Live 8)Protocol 9)Header Checksum 10) Source 11)Destination 12)IP options
Why does the TCP header have a header length field and UDP header does not?
in tcp header (32 bits) we have a field that is called options and padding that has variable in length and the header length shows the actual header size i.e size of 20 octets+size of options and padding field and in UDP we dont have any field like that and its header is fixed of 8 OCTETS (32 bits header size) refrence: WIRELESS COMMUNICATIONS AND NETWORKS by William Stallings Second Edition pg 91(see fig)
