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NEW QUESTION # 36
Which of the following is the most secure way to provide site-to-site connectivity?
Answer: D
Explanation:
IPsec (Internet Protocol Security) is the most secure way to provide site-to-site connectivity. It provides robust security services, such as data integrity, authentication, and encryption, ensuring that data sent across the network is protected from interception and tampering. Unlike other options, IPsec operates at the network layer and can secure all traffic that crosses the IP network, making it the most comprehensive and secure choice for site-to-site VPNs.
Reference: CompTIA Network+ study materials and NIST Special Publication 800-77.
NEW QUESTION # 37
A network administrator needs to connect two routers in a point-to-point configuration and conserve IP space. Which of the following subnets should the administrator use?
Answer: A
Explanation:
Using a /30 subnet mask is the most efficient way to conserve IP space for a point-to-point connection between two routers. A /30 subnet provides four IP addresses, two of which can be assigned to the router interfaces, one for the network address, and one for the broadcast address. This makes it ideal for point-to-point links where only two usable IP addresses are needed.
Reference: CompTIA Network+ study materials and subnetting principles.
NEW QUESTION # 38
Which of the following is the correct order of components in a bottom-up approach for the three- tier hierarchical model?
Answer: D
Explanation:
The three-tier hierarchical model in network design consists of three layers: access, distribution, and core. The access layer is where devices like PCs and printers connect to the network. The distribution layer aggregates the data received from the access layer switches before it is transmitted to the core layer, which is responsible for high-speed data transfer and routing. This approach improves scalability and performance in larger networks.
NEW QUESTION # 39
Which of the following routing protocols is most commonly used to interconnect WANs?
Answer: D
Explanation:
Border Gateway Protocol (BGP): BGP is the most commonly used routing protocol for interconnecting WANs, especially across the internet. It is used for exchanging routing information between autonomous systems (AS), making it the backbone protocol for large-scale WANs.
NEW QUESTION # 40
A network engineer configures the network settings in a new server as follows:
* IP address = 192.163.1.15
* Subnet mask = 255.255.255.0
* Gateway = 192.163.1.255
The server can reach other hosts on the same subnet successfully, but it cannot reach hosts on different subnets. Which of the following is most likely configured incorrectly?
Answer: B
Explanation:
The default gateway for a network should bean IP address within the subnet, butnot the broadcast address
. In this case:
* IP: 192.163.1.15
* Subnet Mask: 255.255.255.0
* This means thenetwork rangeis: 192.163.1.0 - 192.163.1.255
* 192.163.1.255 is thebroadcast addressfor this subnet, so itcannot be used as a gateway.
Hence, the device fails to communicate outside its subnet because it's trying to use abroadcast addressas its gateway.
#The issue is clearly with thegateway configuration.
NEW QUESTION # 41
......
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