Q. The IPv4 header field formerly known as the service type field is now called the _______ field.

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Q. In IPv6, options are inserted between the _________ and the ___________ data.

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Q. IPv6 allows _________ security provisions than IPv4.

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Q. In IPv6, when a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.

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Q. In IPv6, the _______ field in the base header and the sender IP address combine to indicate a unique path identifier for a specific flow of data.

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Q. ICMP is a _________ layer protocol.

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Q. ICMP messages are divided into two broad categories: _____________.

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Q. An ICMP message has _____ header and a variable-size data section.

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Q. Which of the following is true about ICMP messages?

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Q. Which of the following is true about ICMP messages ?

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Q. IGMP is a companion to the ______ protocol.

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Q. IGMP is _______ protocol.

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Q. IGMP helps a ________ router create and update a list of loyal members related to each router interface.

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Q. IGMP operates __________.

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Q. An IGMP query is sent from a _______ to a _______.

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Q. The _______ is used by a router in response to a received leave report.

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Q. The least significant 23 bits in a 48-bit Ethernet address identify a ________.

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Q. The _______ field of the IGMP message is all zeros in a query message.

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Q. A multicast message is sent from _______ to _______.

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Q. In networks that do not support physical multicast addressing, multicasting can be accomplished through _______.

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