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Exam 9: In-Depth TCP/IP Networking

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Question 21

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The gateways that make up the Internet backbone are called ____ gateways.

A) proxy
B) core
C) Internet
D) default

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Question 22

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POP3's design makes it best suited to users who retrieve their mail from the same workstation all the time.

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Question 23

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Explain how the traceroute utility uses ICMP ECHO requests to trace the path from one networked node to another, identifying all intermediate hops between the two nodes.

Describe the formula determining how to modify a default subnet mask to create subnets.

When using classful IPv4 addressing, a network ID always ends with an octet of ____.

Describe four features of IMAP4.

If subnetting is used on a LAN, explain how devices interpret subnetting information.

Explain how hiding IP addresses on private networks allows network managers more flexibility in assigning addresses.

Because the octets equal to 0 and 255 are ____, only the numbers 1 through 254 can be used for host information in an IPv4 address.

A class ____ network class is reserved for special purposes.

SMTP operates from port ____.

In ____ addressing, the network information portion of an IPv4 address is limited to the first 8 bits in a Class A address.

Within a classful addressing, ____ is the default subnet mask for a Class C address.

The ____ gateway is the gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets.

The.backbone are called ____________________ gateways.

IMAP (Internet Message Access Protocol) is a mail retrieval protocol that was developed as a more sophisticated alternative to ____.

An administrator can discover the host name assigned to a client by using the ____ utility.

The ____ utility allows you to view a host's routing table.

Within a classful addressing subnet mask, the ____ bits indicate that corresponding bits in an IPv4 address contain network information.

In classful addressing, the Class B IPv4 address network ID is located in the ____.