To determine which version to use when sending a packet to a destination, the source host queries which of the following?

• A. Dual stack
• B. Domain name server
• C. Header information
• D. Transport layer

The strategy used when two computers using IPv6 want to communicate with each other and the packet must pass through a region that uses IPv4 is ______________

• A. Dual stack
• B. Header translation
• C. Conversion
• D. Tunneling

The correct format of packet in tunnel that uses IPv4 region is ________ i. IPv6 header ii. Payload iii. IPv4 header

• A. Iii-i-ii
• B. Iii-ii-i
• C. I-ii-iii
• D. I-iii-ii

___________ is necessary when the sender wants to use IPv6, but the receiver does not understand IPv6.

• A. Dual stack
• B. Header translation
• C. Conversion
• D. Tunneling

Header translation uses ___________ to translate an IPv6 address to an IPv4 address.

• A. Ip address
• B. Physical address
• C. Mapped address
• D. Mac address

Which of the following is not a step in the Header translation procedure?

• A. The ipv6 mapped address is changed to an ipv4 address by extracting the rightmost 32bits
• B. The value of the ipv6 priority field is discarded
• C. The type of service field in ipv4 is set to zero
• D. The ipv6 flow label is considered

Which statement is true regarding classless routing protocols?

• A. The use of discontinuous networks is not allowed
• B. The use of variable length subnet masks is permitted
• C. Ripv1 is a claSSLess routing protocol
• D. Ripv2 supports claSSLess routing

What is route poisoning?

• A. It sends back the protocol received from a router as a posion pill, which stops the regular updates. the use of variable length subnet masks is permitted
• B. It is information received from a router that can’t be sent back to the originating router.ripv2 supports claSSLess routing
• C. It prevents regular update messages from reinstating a route that has just come up
• D. It describes when a router sets the metric for a downed link to infinity

Which of the following is true regarding RIPv2?

• A. It has a lower administrative distance than ripv1
• B. It converges faster than ripv1
• C. It has the same timers as ripv1
• D. It is harder to configure than ripv1

Which of the situations might not require multiple routing protocols in a network?

• A. When a new layer 2-only switch is added to the network
• B. When you are migrating from one routing protocol to another
• C. When you are using routers from multiple vendors
• D. When there are host-based routers from multiple vendors