Cisco CCNA mock exam questions sample test – Question 97

.Which of the following statements are true with regard to the network shown in the exhibit? (Click the Exhibit(s) button.)

q97

A. there is one broadcast domain and one collision domain
B. there is one broadcast domain and four collision domains
C. there are two broadcast domains and two collision domains
D. there are two broadcast domains and four collision domains
E. the hosts in VLAN1 could use IP addresses 192.168.5.4/24 and 192.168.5.5/24 and the hosts in VLAN2 could use IP addresses 192.168.6.1/24 and 192.168.6.2/24
F. the hosts in VLAN2 could use IP addresses 192.168.5.5/24 and 192.168.6.5/24

Correct Answer: DE

Explanation:
There are two broadcast domains and four collision domains in the network shown in exhibit. A Virtual LAN (VLAN) is a group of networking devices in the same broadcast domain. A broadcast domain is a group of devices such that when one device in the group sends a broadcast, all the other devices in the group will receive that broadcast. Because there are two VLANs shown in the exhibit, VLAN1 and VLAN2, there are two broadcast domains. A switch will not forward broadcast frames between VLANs.

A collision domain is a domain where two or more devices in the domain could cause a collision by sending frames at the same time. Each switch port is a separate collision domain.
Because there are four switch ports in the exhibit, there are four collision domains.
The hosts in VLAN1 could use IP addresses 192.168.5.4/24 and 192.168.5.5/24 and the hosts in VLAN2 could use IP addresses 192.168.6.1/24 and 192.168.6.2/24. Hosts in different VLANs must have IP addresses that are in different subnets.
The other options that offer IP address plans are incorrect because they either place hosts from different VLANs in the same subnet, or place hosts in the same VLAN in different subnets.

Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot VLANs (normal/extended range) spanning multiple switches
References:
Cisco > Support>Technology Support > LAN Switching > Layer-Three-Switching and Forwarding > Configure > Configuration Examples and TechNotes > How To Configure
InterVLAN Routing on Layer 3 Switches