100-150 Partial Practice Questions
The free 100-150: Cisco Certified Support Technician (CCST) Networking questions that deal with partial, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #3
Which two statements are true about the IPv4 address of the default gateway configured on a host? (Choose 2.) Note: You will receive partial credit for each correct selection.
Select 2 answers.
Correct answer: B, D
Explanation
•Statement B: "The same default gateway IPv4 address is configured on each host on the local network." This is true because all hosts on the same local network (subnet) use the same default gateway IP address to send packets destined for other networks. •Statement D: "The default gateway is the IPv4 address of the router interface connected to the same local network as the host." This is true because the default gateway is the IP address of the router's interface that is directly connected to the local network. •Statement A: "The IPv4 address of the default gateway must be the first host address in the subnet." This is not necessarily true. The default gateway can be any address within the subnet range. •Statement C: "The default gateway is the Loopback0 interface IPv4 address of the router connected to the same local network as the host." This is not true; the default gateway is the IP address of the router's physical or logical interface connected to the local network. •Statement E: "Hosts learn the default gateway IPv4 address through router advertisement messages." This is generally true for IPv6 with Router Advertisement (RA) messages, but not typically how IPv4 hosts learn the default gateway address. References: •Cisco Default Gateway Configuration: Cisco Default Gateway
Question #7
A local company requires two networks in two new buildings. The addresses used in these networks must be in the private network range. Which two address ranges should the company use? (Choose 2.) Note: You will receive partial credit for each correct selection.
Select 2 answers.
Correct answer: A, D
Explanation
The private IP address ranges that are set aside specifically for use within private networks and not routable on the internet are as follows: • Class A: 10.0.0.0 to 10.255.255.255 • Class B: 172.16.0.0 to 172.31.255.255 • Class C: 192.168.0.0 to 192.168.255.255 These ranges are defined by the Internet Assigned Numbers Authority (IANA) and are used for local communications within a private network123. Given the options: A. 172.16.0.0 to 172.31.255.255 falls within the Class B private range. * B. 192.16.0.0 to 192.16.255.255 is not a recognized private IP range. C. 11.0.0.0 to 11.255.255.255 is not a recognized private IP range. D. 192.168.0.0 to 192.168.255.255 falls within the Class C private range. Therefore, the correct selections that the company should use for their private networks are A and D. References := • Reserved IP addresses on Wikipedia • Private IP Addresses in Networking - GeeksforGeeks • Understanding Private IP Ranges, Uses, Benefits, and Warnings
Question #9
You plan to use a network firewall to protect computers at a small office. For each statement about firewalls, select True or False. Note: You will receive partial credit for each correct selection.
Answer Yes or No for each statement in the exhibit.
Correct answer: True, True, False
Explanation
True: a firewall can redirect web traffic to a specific IP address using NAT/port forwarding. True: a firewall can block traffic to specific ports on internal computers. False: preventing specific apps from running on a computer requires endpoint or application-control software, not a network firewall.
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