Chat with AIExam 3: Basic Ip Packet Structures: Headers and Payloads
Briefly describe the Protocol field in the IPv4 header.
(35) 
VerifiedHeaders should have some field that defines what is coming up next. For example, in a TCP/IP packet, an Ethernet header should have a protocol Identification field (the Type or Ether Type field) to indicate what IP is coming up next. The IP header, likewise, has a Protocol field to indicate what is coming up next.
The values 253 and 254 are for experimentation, 143 -252 are unassigned, and 255 is reserved by IANA. To obtain the most current list of Protocol field values, visit www.iana.org/assignments/protocol-numbers.
What is "6to4"?
(41) VerifiedRFC 3056, "Connection of IPv6 Domains via IPv4 Clouds," specifies an optional method for IPv6 sites to communicate with one another over IPv4 networks without setting up tunneling. This mechanism treats IPv4 wide area networks (WANs) as a unicast point-to-point link. Please keep in mind that this is suggested as an interim solution only, whereas IPv4 and IPv6 are required to work together. Once the final transition to IPv6 is complete, IPv4 "clouds" will no longer need to exist.
The common name used to refer to this method is "6to4," sometimes referred to as "6to4 tunneling." (This is somewhat misnamed, because an explicit tunneling setup is not required.)
The fixed IPv6 header of an IPv6 packet is made up of how many octets?
(34) VerifiedD
How many possible fields can be contained in an IPv4 header?
(33) A(n) _________________________ is a set of packets for which a source requires special handling by the intervening routers.
(27) The ____ extension header provides a method for extending the IPv6 header to support options for packet handling and preferences.
(39) When a packet is sent between two ECN-capable routers, the packet is usually marked ECT(0) or ECT(10) for ECN Capable Transport.
Indicate the answer choice that best completes the statement or answers the question.
(32) _________________________ was designed to provide devices with a method for notifying each other that a link is experiencing congestion before the routers start to drop packets.
(31) The Internet Protocol (IP) primarily works to transmit and deliver data between devices on internetworks.
(30) The Type of Service field actually has two components: Precedence and which of the following?
(31) Which IPv6 header includes fields for the intermediary addresses through which the IPv6 packet should be forwarded?
(37) Which of the following is a special marker with which traffic can be prioritized by an end device or boundary device and queued and forwarded according to this value?
(27) In networking terms, the remaining distance that the packet can travel is known as which of the following?
(35) In IPv6, each extension header is identified by a specific value known as which of the following.
(31) Match each item with a statement below.
a.Voice over IP (VoIP)
b.per-hop behavior (PHB)
c.Fragment Offset field
d.Maximum Datagram Lifetime (MDL)
e.6to4
f.precedence
g.path MTU (PMTU) Discovery
h.Jumbogram
i.time to live (TTL)
-a way of describing protocols and priorities applied to a packet on traversing a router "hop"
(28) Match each item with a statement below.
a.Voice over IP (VoIP)
b.per-hop behavior (PHB)
c.Fragment Offset field
d.Maximum Datagram Lifetime (MDL)
e.6to4
f.precedence
g.path MTU (PMTU) Discovery
h.Jumbogram
i.time to live (TTL)
-the field that defines where a fragment should be placed when the entire data set is reassembled
(36) Which field in an IPv6 packet is used by source network hosts and forwarding routers to distinguished classes or priorities?
(33) 
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