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CompTIA Network+ certification Sample Questions:

1. Ann, a new user, is unable to communicate on the network from her computer. A technician has verified that the cables are functioning properly. Based on the information below, which action should the technician take to correct Ann's problem?
Computer_ASwitch_A
IP: 10.0.0.60Int VLAN10
SM: 255.255.255.0IP address 10.0.0.1/28
GW: 10.0.0.1Speed 100 Duplex Full

A) Change the speed on the switch interface to 10Mbps
B) Change the duplex on the switch interface to half
C) Change the IP address of the computer to 10.0.0.12
D) Change the subnet mask of the computer to 255.255.255.240

2. Which of the following is a public class C IP address?

A) 194.178.12.54
B) 192.168.1.34
C) 175.35.46.60
D) 4.2.2.2

3. A network technician is attempting to connect a new host to existing manufacturing equipment on an Ethernet network. The technician is having issues trying to establish communication between the old equipment and the new host. The technician checks the cabling for breaks and finds that the CAT3 cable in use is in perfect condition. Which of the following should the technician check to ensure the new host will connect?

A) Confirm the new host is using 10GBaseSR due to the manufacturing environment
B) Confirm the existing 10Base2 equipment is using the proper frame type
C) Confirm that CSMA/CD is disabled on the Ethernet network
D) Confirm the new host is compatible with 10BaseT Ethernet

4. A network technician is concerned that an attacker is attempting to penetrate the network, and wants to set a rule on the firewall to prevent the attacker from learning which IP addresses are valid on the network. Which of the following protocols needs to be denied?

A) ICMP
B) TCP
C) ARP
D) SMTP

5. When a client calls and describes a problem with a computer not being able to reach the Internet, in which of the following places of the OSI model would a technician begin troubleshooting?

A) Physical layer
B) Network layer
C) Session layer
D) Transport layer

Solutions: