Chapter 8

Why is NAT not needed in IPv6?​

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

Which statement describes a feature of the IP protocol?

IP relies on upper layer services to handle situations of missing or out-of-order packets.

Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?

TTL

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

The computer has an invalid default gateway address.

Within a production network, what is the purpose of configuring a switch with a default gateway address?

The default gateway address is used to forward packets originating from the switch to remote networks.

How do hosts ensure that their packets are directed to the correct network destination?

They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly?

Time-to-Live

What is a basic characteristic of the IP protocol?

connectionless

Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?

destination IPv4 address

Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet?

differentiated services

What is one advantage that the IPv6 simplified header offers over IPv4?

efficient packet handling

What are two services provided by the OSI network layer? (Choose two.)

encapsulating PDUs from the transport layer routing packets toward the destination

Which term describes a field in the IPv4 packet header used to detect corruption in the IPv4 header?

header checksum

Which term describes a field in the IPv4 packet header used to identify the next level protocol?

protocol

Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device?

source IPv4 address

Which parameter does the router use to choose the path to the destination when there are multiple routes available?

the lower metric value that is associated with the destination network

Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?

version