The hop limit field in the IPv6 header is decremented by 1 for each router that forwards a packet. The packet is
discarded when the hop limit field reaches zero.
Answer option B is incorrect. Next header is an 8-bit field that specifies the next encapsulated protocol.
Answer option A is incorrect. Flow label is a 20-bit field that is used for specifying special router handling from
source to destination for a sequence of packets.
Answer option C is incorrect. Traffic class is an 8-bit field that specifies the Internet traffic priority delivery value.

A user policy helps in defining what users can and should do to use network and organization's computer equipment. It also defines what limitations are put on users for maintaining the network secure such as whether users can install programs on their workstations, types of programs users are using, and how users can access data.
Answer option C is incorrect. IT policy includes general policies for the IT department. These policies are intended to keep the network secure and stable. It includes the following:
Virus incident and security incident
Backup policy
Client update policies
Server configuration, patch update, and modification policies (security) Firewall policies Dmz policy, email retention, and auto forwarded email policy Answer option A is incorrect. It defines the high level program policy and business continuity plan.
Answer option B is incorrect. Remote access policy is a document that outlines and defines acceptable methods of remotely connecting to the internal network.

The Dynamic Host Configuration Protocol (DHCP) is a computer networking protocol used by hosts (DHCP clients) to retrieve IP address assignments and other configuration information. DHCP uses a client-server architecture. The client sends a broadcast request for configuration information. The DHCP server receives the request and responds with configuration information from its configuration database.
In the absence of DHCP, all hosts on a network must be manually configured individually - a time-consuming and often error-prone undertaking. DHCP is popular with ISP's because it allows a host to obtain a temporary IP address.
Answer option B is incorrect. Address Resolution Protocol (ARP) is a network maintenance protocol of the TCP/IP protocol suite. It is responsible for the resolution of IP addresses to media access control (MAC) addresses of a network interface card (NIC). The ARP cache is used to maintain a correlation between a MAC address and its corresponding IP address. ARP provides the protocol rules for making this correlation and providing address conversion in both directions. ARP is limited to physical network systems that support broadcast packets.
Answer option A is incorrect. The Simple Network Management Protocol (SNMP) allows a monitored device (for example, a router or a switch) to run an SNMP agent. This protocol is used for managing many network devices remotely.
When a monitored device runs an SNMP agent, an SNMP server can then query the SNMP agent running on the device to collect information such as utilization statistics or device configuration information. An SNMP- managed network typically consists of three components: managed devices, agents, and one or more network management systems.
Answer option D is incorrect. Telnet (Telecommunication network) is a network protocol used on the Internet or local area networks to provide a bidirectional interactive communications facility. Typically, Telnet provides access to a command-line interface on a remote host via a virtual terminal connection which consists of an 8- bit byte oriented data connection over the Transmission Control Protocol (TCP). User data is interspersed in- band with TELNET control information. Typically, the Telnet protocol is used to establish a connection to Transmission Control Protocol (TCP) port number 23.