Drag and Drop 2

Here you will find answers to Drag and Drop Questions – Part 2

Question 1

Answer:

Identifies the source of the packet: Router ID

Identifies the area to which the packet belongs: Area ID

Contains the authentication type. All OSPF protocol exchanges are authenticated: Authentication Type

Checks contents of the entire packet for any damage suffered during transmission: Checksum

Contains authentication information: Authentication

Contains encapsulated upper-layer information: Data

Question 2

Answer:

Maintains the list of routers connected to the network: Network-LSA

Describes the collected states of the routers interfaces to an area: Router-LSA

Describes a route to a destination in another autonomous system: AS-external-LSA

Describes a route to a destination outside the area: Summary-LSA

Question 3

A virtual private network (VPN) is a computer network that is layered on the top of an underlying computer network. VPNs are of different technologies, such as Trusted VPNs, Secure VPNs, and Hybrid VPNs, each having distinct requirements. Drag the various VPN names to their appropriate places.

Answer:

All traffic on the VPN must be encrypted and authenticated: Secure VPN

The routing and addressing used must be established before the VPN is created: Trusted VPN

The address boundaries must be extremely clear: Hybrid VPN

Question 4

IPv6 to IPv4 transition methods

Answer:

NAT-PT

6 to 4 tunnels

GRE tunnels

ISATAP tunnels

Question 5

IP tunneling is a method to encapsulate IP datagram within IP datagrams, which allows datagrams intended for one IP address to be wrapped and redirected to another IP address. IPv6 packets are encapsulated directly behind the IPv4 header. Drag the header fields to the appropriate places:

Answer:

The correct order is:

Explanation

The structure of a normal IPv6 packet is:

The IPv6 header is always present and is a fixed size of 40 bytes. Zero or more extension headers can be present and are of varying lengths. The upper layer protocol data unit (PDU) usually consists of an upper layer protocol header and its payload (for example, an ICMPv6 message, a UDP message, or a TCP segment).

Because “IPv6 packets are encapsulated directly behind the IPv4 header” so we can deduce an IPv4 Header must be placed before an IPv6 header.