Intro to Cyber Unit 4 Review

Which of the following best describes the purpose of using subnets?

• Subnets combine multiple IP network addresses into one network address.

• Subnets place each device within its own collision domain.

• Subnets divide an IP network address into multiple network addresses.

• Subnets let you connect a private network to the internet.

Which port is a DHCP Discover packet sent out on when a device first connects to a network?

• 53

• 67

• 68

• 80

Which of the following is the first place a computer looks at during the name resolution process?

• Reverse lookup zone

• DNS server

• HOSTS file

• Forward lookup zone

Which of the following ports does NTP run on?

• 80

• 123

• 443

• 21

You want to implement a protocol on your network that allows computers to find a host's IP address from a logical name. Which protocol should you implement?

• DHCP

• DNS

• Telnet

• ARP

Which protocol is used by a device to ensure that an APIPA address is not already in use on the network?

• ARP

• TCP

• IP

• DHCP

You are creating a DHCP scope for a new network segment for the Development department. The department has several printers and servers that need to have a static IP address assigned to them that will not be changed by the DHCP server. Which of the following DHCP scope setting do you need to configure to avoid DHCP assigned IP addresses to these devices?

• IP range

• Reservations

• Exclusions

• Subnet mask

What is it called when a system's clock begins to be off by a few seconds or even minutes?

• Dispersion

• Slew

• Time drift

• Slam

Which type of address identifies which single host to send a packet to?

• Unicast

• Broadcast

• Simplex

• Multicast

Which of the following is the top-level domain in www.testout.com.'s fully qualified domain name (FQDN)?

• com

• www

• testout

• . (period)