nwc 221-240

In order to maximize the usage of limited IP addresses, which of the following protocol is commonly used

• NAT

• DHCP

• Both of the above

• None of the above

The internet protocol allows IP fragmentation so that datagrams can be fragmented into pieces small enough to pass over a link with a smaller MTU than the original datagram size

• t

• f

Which of the following statement is correct for IPv6

• Addresses are not hierarchical and are randomly assigned

• There are 2.7 billion available addresses

• Broadcast in IPv4 have been replaced with multicast in IPv6

• Does not support multiple multiple IPv6 address per interface

Bootstrap Protocol (BOOTP) allows a diskless workstation to be remotely booted up in a network with TCP port designation for both client and server

• t

• f

In NAT operations, which of the following statements are correct

• NAT maps each private IP address and port number into shared global IP address and available port number

• Hosts inside private networks generate packets with private IP address and TCP/UDP port numbers

• Translation table allows packets to be routed unambiguously

• Translation table allows packets to be routed ambiguously

Packet is to be forwarded to a network with MTU of 592 bytes. The packet has an IP header of 20 bytes and a data part of 1484 bytes. Which of following maximum data length per fragment is legitimate?

• 592

• 572

• 568

• 562

What information is used as the entry of the lookup table in a Network Address Translation box?

• UDP port number

• IP address

• All of the above

• TCP port number

IPv6 allows fragmentation at

• Source only

• Intermediate routers only

• Both source and intermediate routers

• None of the above

Which of following fields that IPv6 dropped from IPv4?

• Header length

• Header checksum

• All of the above

• ID/flags/frag offset

in practical IPv6 application, a technology encapsulates IPv6 packets inside IPv4 packets, this technology is called

• Routing

• IP tunneling

• Network address translation

• Dynamic host configuration protocol