Quiz 6

Question 1

Both Ethernet (wired LAN) and WiFi (wireless LAN) use CRC for error detection.

Answer

true

Question 2

Compared to wired LANs (Ethernet), devices in a wireless LAN cannot reliably detect collisions.

Answer

true

Question 3

A WiFi signal transmitted on a 5GHz band is affected by a path loss that is less than the path loss affecting a WiFi signal transmitted on a 2.5GHz band for the same transmission distance.

Answer

true

Question 4

Ethernet switches identify the destination using the IP address in packet.

Answer

true

Question 5

Hubs broadcast incoming frames, and hence form a network with a logical bus topology.

Answer

true

Question 6

An Ethernet switch uses the destination address in a frame to build a switch table.

Answer

true

Question 7

In virtual LANs, devices are connected based on their logical functions and not necessarily their physical location.

Answer

true

Question 8

When an end device transmits a packet over a physical medium, it contains either IP addresses or MAC addresses.

Answer

true

Question 9

In virtual circuit packet switching, packets from the same source to the same destination can go through different routes.

Answer

true

Question 10

The time to live field of an IP packet indicates the remaining life of the packet in network hops.

Answer

true

Question 11

The network layer is responsible for transferring packets of data from the source device to the destination via one of more networks.

Answer

true

Question 12

The main advantage of address classes is that IP addresses are not wasted.

Answer

true

Question 13

Using CIDR, the leftmost bits of an IP address identify the network in which the host is located.

Answer

true

Question 14

With CIDR, each organization can choose any length for a network ID in the IP address based on the number of hosts they need to support.

Answer

true

Question 15

An organization with a /20 CIDR address block can have at most 2^20 hosts.

Answer

true

Question 16

Subnetting is a way of breaking down large blocks of IP addresses into smaller address blocks.

Answer

true

Question 17

A host uses the subnet mask to identify whether the destination is on the same subnet.

Answer

true

Question 18

Each subnet within an organization has a unique address.

Answer

true

Question 19

When the subnet mask 255.255.255.0 is applied to the IP address 192.168.151.45, the masked address is 192.168.151.0.

Answer

true

Question 20

ARP is a protocol designed to obtain the IP address from the corresponding MAC address.

Answer

true

Quiz 6

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