Internet Protocol Version 6 Ipv6 — Test 1

Correct Answer: D. D. 40bytes
Explanation: IPv6 datagram has fixed header length of 40bytes. It results in faster processing of the datagram. Fixed length IPv6 header allows the routers to process the IPv6 datagram packets more efficiently.

Correct Answer: B. B. 2128
Explanation: The main advantage of IPv6 over IPv4 is its larger address space. The length of an IPv6 address is 128 bits, compared with 32 bits in IPv4. The address space therefore has 2128 or approximately 3.4×1038 addresses.

Correct Answer: B. B. Header translation
Explanation: Three strategies used to handle transition from version 4 to version 6 are dual-stack, tunneling and header translation. Header translation techniques are more complicated than IPv4 NAT because the protocols have different header formats.

Correct Answer: D. D. Maximum transmission unit
Explanation: In computer networking, the maximum transmission unit (MTU) is the size of the largest network layer protocol data unit that can be communicated in a single network transaction.

Correct Answer: C. C. High bandwidth
Explanation: In IPv6, real-time audio or video, particularly in digital form, requires resources such as high bandwidth, large buffers, long processing times, and so on. A process can make a reservation for these resources beforehand to guarantee that real time data will not be delayed.

Correct Answer: A. A. Tunneling
Explanation: IPv6 tunneling enables IPv6 hosts and routers to connect with other IPv6 hosts and routers over the existing IPv4 Internet. The main purpose of IPv6 tunneling is to deploy IPv6 as well as maintain compatibility with large existing base of IPv4 hosts and routers.

Correct Answer: B. B. Broadcasts have been eliminated and replaced with multicasts
Explanation: In IPv6, there’s no longer any broadcast, sending one packet to a large number of unspecified hosts. There’s only multicast, unicast and anycast. In IPv6 all nodes are required to support multicast.

Correct Answer: C. C. Tos field
Explanation: This field enables to have different types of IP datagram. In an IPv6 packet, the Traffic Class byte is used in the same way as the ToS byte in an IPv4 packet. A ToS/Traffic Class byte includes a DSCP (Differentiated Services Codepoint) and precedence bits.

Correct Answer: D. D. All of the mentioned
Explanation: All the features are only present in IPv4 and not IPv6. IPv6 no longer has a header checksum to protect the IP header, meaning that when a packet header is corrupted by transmission errors, the packet is very likely to be delivered incorrectly.

Correct Answer: A. A. Protocol
Explanation: IPv6 is designed to allow the extension of the protocol if required by new technologies or applications. IPv6 uses a new header format in which options are separated from the base header and inserted, when needed, between the base header and upper-layer data.