Unit 3

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You have just brought online a new secondary DNS server and notice your network-monitoring software reports a significant increase in network traffic. Which two hosts on your network are likely to be causing the increased traffic and why?

The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server

If you are connected to a network that uses DHCP, and you need to terminate your Windows workstation's DHCP lease, which command would you use?

ipconfig /release

What decimal number corresponds to the binary number 11111111?

255

Suppose you send data to the 11111111 11111111 11111111 11111111 IP address on an IPv4 network. To which device(s) are you transmitting?

All devices on your local network

What type of device does a computer turn to first when attempting to make contact with a host with a known IP address on another network?

Default Gateway

When your computer first joins an IPv6 network, what is the prefix of the IPv6 address the computer first configures for itself?

FE80::/10

Which computers are the highest authorities in the Domain Name System hierarchy?

Root servers

Which part of a MAC address is unique to each manufacturer?

The OUI

Which of these commands is available only in Linux?

dig

Which type of DNS record identifies an email server?

MX Record


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