Why do large OSPF networks use a hierarchical design? (Choose three.)

• A.to decrease latency by increasing bandwidth
• B.to reduce routing overhead
• C.to speed up convergence
• D.to confine network instability to single areas of the network
• E.to reduce the complexity of router configuration
• F.to lower costs by replacing routers with distribution layer switches

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Which type of organization should use a collapsed-core architecture?

• A.large and requires a flexible, scalable network design
• B.large and must minimize downtime when hardware fails
• C.small and needs to reduce networking costs currently
• D.small but is expected to grow dramatically in the near future

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What are three characteristics of the TCP protocol? (Choose three.)

• A.The connection is established before data is transmitted.
• B.It requires applications to determine when data packets must be retransmitted.
• C.It ensures that all data is transmitted and received by the remote device.
• D.It supports significantly higher transmission speeds than UDP.
• E.It uses separate SYN and ACK messages to establish a connection.
• F.It uses a single SYN-ACK message to establish a connection.

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Which of the following is the JSON encoding of a dictionary or hash?

• A.("key": "value")
• B.{"key", "value"}
• C.{"key": "value"}
• D.["key", "value"]

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Which option about JSON is true?

• A.uses predefined tags or angle brackets () to delimit markup text
• B.used to describe structured data that includes arrays
• C.used for storing information
• D.similar to HTML, it is more verbose than XML

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