7.3.1 Network Reconnaissance

What is the total number of bits used in an IPv4 address?

• 16 Bits

• 64 Bits

• 128 Bits

• 32 Bits

What does the network portion of an IPv4 address identify?

• The specific device

• The Internet Service Provider

• The Local Area Network (LAN)

• The Wide Area Network (WAN)

What does the host portion of an IPv4 address identify?

• The Local Area Network (LAN)

• The specific device

• The Internet Service Provider

• The Wide Area Network (WAN)

What is the primary function of a subnet mask in a network?

• To identify the network bits versus the host bits

• To encrypt data packets

• To increase the network speed

• To provide physical security to the network

Which subnet mask is typically used for a network with the first octet ranging from 128 to 191?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• 255.255.255.255

What does the subnet mask 255.255.255.0 correspond to in slash notation?

• /8

• /16

• /24

• /32

Which of the following is NOT a correct representation of a subnet mask in dotted decimal notation?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• 256.255.255.0

What does the slash notation /16 indicate about the subnet bits?

• 16 bits are set to 0

• 16 bits are set to 1

• 8 bits are set to 1

• 24 bits are set to 1

What is the purpose of an IP address with all 0s in the host bit positions in a network?

• To identify the network itself

• To broadcast packets to all devices

• To provide a gateway for external networks

• To assign a specific device on the network

Which of the following is an example of a broadcast address used in networks?

• 156.30.0.0

• 205.168.13.0

• 64.255.255.255

• 89.0.0.0