Deck 3: Basic Ip Packet Structures: Headers and Payloads

Question 1

What field in the basic IPv6 header is used to chain additional headers?

A)Chain Header
B)Next Header
C)Header PTR
D)Extensions

Answer 1

B

Question 2

Because PHB is independent of how individual routers are configured, the end-to-end behavior of traffic is predictable.

Answer 2

False

Question 3

Which field specifies the header type of the header immediately following the IPv6 header?

A)Next Header
B)Payload Class
C)Traffic Class
D)Header Type

Answer 3

A

Question 4

In IPv6, each extension header is identified by a specific value known as which of the following.

A)Traffic Class
B)Next Header
C)Payload Header
D)Traffic Header

Question 5

The value in which of the following fields will decrement by one each time it is forwarded by a network node, and the IPv6 packet is discarded if the value in this field reaches 0?

A)Hop Count
B)Time to Live
C)Hop Limit
D)Time Limit

Question 6

Jumbograms use which of the following extension headers to add an alternate Packet Length field of 32 bytes?

A)Option Type
B)Hop-by-Hop Options
C)Header Offset
D)Next Packet Length

Question 7

The ____ extension header provides a method for extending the IPv6 header to support options for packet handling and preferences.

A)Extended Header Options
B)Destination Options
C)Hop-by-Hop Options
D)Next Payload Options

Question 8

Which extension header is designed to carry information that affects routers along a path?

A)Hop-by-Hop Options
B)Jumbograms
C)Next Header Options
D)Traffic Class

Question 9

Unlike IPv4 packets, IPv6 packets ensure that data or application information is successfully transported from a source to a destination node on a network.

Question 10

Which field defines the length of the IP header and any valid data (although it does not include any data link padding)?

A)Header Length
B)Frame Length
C)Packet Length
D)Total Length

Question 11

How many possible fields can be contained in an IPv4 header?

A)14
B)15
C)19
D)21

Question 12

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?

A)DSCP
B)ECN
C)CE
D)IHL

Question 13

IPv6 jumbograms are specified as a proposed standard in which of the following RFCs?

A)1100
B)1700
C)2314
D)2675

Question 14

The Type of Service field actually has two components: Precedence and which of the following?

A)Trailer
B)Type of Service
C)Payload
D)Frame

Question 15

Though defined in terms of seconds, a TTL value is implemented as a number of hops that a packet can travel before being discarded by a router.

Question 16

The fixed IPv6 header of an IPv6 packet is made up of how many octets?

A)8
B)16
C)32
D)40

Question 17

In IPv6, which extension header should be used to encrypt data?

A)Cryptographic
B)Authentication Data
C)Secure Payload
D)Encapsulating Security Payload

Question 18

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.

Question 19

The Internet Protocol (IP) primarily works to transmit and deliver data between devices on internetworks.

Question 20

Which field in an IPv6 packet is used by source network hosts and forwarding routers to distinguished classes or priorities?

A)Hop Limit
B)Payload Class
C)Traffic Class
D)Flow Label

Question 21

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"

Question 22

In networking terms, the remaining distance that the packet can travel is known as which of the following?

A)time to live (TTL)
B)number of hops (NOH)
C)offset
D)remaining path

Question 23

If the packet is a fragment, the _________________________ field shows where to place this packet's data when the fragments are reassembled into a single packet.

Question 24

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 technique used by IPv6 nodes to determine the size of packets that can be transmitted along a proposed network path from a source to a network address

Question 25

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 communications technology that allows voice and multimedia communication sessions over IP networks (e.g., the Internet or an intranet)

Question 26

Which RFC is used to define a method for differentiating services for network traffic using the six high-order bits of the byte that was formerly the 3-bit Precedence field and the first bit of the TOS field?

A)1212
B)1974
C)2156
D)2474

Question 27

_________________________ allow additional functionality to be implemented in an IPv6 packet.

Question 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)
a definition of priority for an IP packet

Question 29

The header can be between 20 and how many bytes in length?

A)50
B)60
C)70
D)80
Enter the appropriate word(s) to complete the statement.

Question 30

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

Question 31

A(n) _________________________ is a set of packets for which a source requires special handling by the intervening routers.

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.

Question 33

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 specification for allowing very large (beyond 4-gigabyte) packets to be transported using IPv6

Question 34

Which IPv6 header includes fields for the intermediary addresses through which the IPv6 packet should be forwarded?

A)Routing extension
B)Destination Options
C)Hop-by-Hop Options
D)Fragment extension

Question 35

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 longest period of time a datagram may exist

Question 36

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 method of allowing IPv6 network nodes to communicate with each other over an IPv4 network by special encapsulation of IPv6 packets

Question 37

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)
an indication of the remaining distance that a packet can travel

Question 38

In IPv4, what is the maximum time to live value?

A)64
B)128
C)255
D)312

Question 39

A(n) _________________________ is a router buffering system used to hold packets when the router is congested.

Question 40

The fields of the Fragment extension header are almost identical to the IPv4 fragment fields except for the use of which field?

A)Next Header
B)Fragment Offset
C)Flags
D)Reserved

Question 41

What is a real-time application (RTA)?

Question 42

Describe the IPv4 Header Length field.

Question 43

Briefly describe IGMP.

Question 44

What is the role of the Next Header field in IPv6?

Question 45

What is the recommended extension header ordering in IPv6?

Question 46

What are the general requirements for the Traffic Class field in an IPv6 header?

Question 47

What is the purpose of the Identification field in IPv4?

Question 48

What is "6to4"?

Question 49

Briefly describe the Protocol field in the IPv4 header.

Question 50

Briefly describe the IPv6 Authentication extension header.