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| Section | Objectives |
|---|---|
| Networking Concepts | - OSI model and TCP/IP model - IPv4 and IPv6 addressing - Network topologies and types (LAN, WAN, WLAN) - Ports, protocols, and services |
| Network Security | - Network hardening techniques - Access control and authentication - Security concepts and threats |
| Network Operations | - Monitoring and optimization - Network documentation and diagrams - Business continuity and disaster recovery |
| Network Implementation | - Wireless networking - Routing technologies - Switching technologies - Network storage and virtualization |
| Network Troubleshooting | - Troubleshooting methodology - Tools and diagnostic techniques - Common network issues |
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NEW QUESTION # 336
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
Answer: D
Explanation:
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.
Reference: CompTIA Network+ study materials.
NEW QUESTION # 337
A network administrator configured a router interface as 10.0.0.95 255.255.255.240. The administrator discovers that the router is not routing packets to a web server with IP 10.0.0.81/28. Which of the following is the best explanation?
Answer: A
Explanation:
Understanding Subnetting:
The subnet mask 255.255.255.240 (or /28) indicates that each subnet has 16 IP addresses (14 usable addresses, 1 network address, and 1 broadcast address).
Calculating the Subnet Range:
Subnet Calculation: For the IP address 10.0.0.95 with a /28 subnet mask:
Network address: 10.0.0.80
Usable IP range: 10.0.0.81 to 10.0.0.94
Broadcast address: 10.0.0.95
Router Interface Configuration:
Broadcast Address Issue: The IP address 10.0.0.95 is the broadcast address for the subnet 10.0.0.80/28. Configuring a router interface with the broadcast address will cause routing issues as it is not a valid host address.
Comparison with Other Options:
The web server is in a different subnet: The web server (10.0.0.81) is within the same subnet range (10.0.0.80/28).
The IP address space is a class A network: While 10.0.0.0 is a Class A network, this does not explain the routing issue caused by the broadcast address.
The subnet is in a private address space: The private address space designation (RFC 1918) does not impact the routing issue related to the broadcast address configuration.
Resolution:
Reconfigure the router interface with a valid host IP address within the usable range, such as 10.0.0.94.
Reference:
CompTIA Network+ study materials on subnetting and IP address configuration.
NEW QUESTION # 338
Which of the following most likely determines the size of a rack for installation? (Select two).
Answer: F
Explanation:
* Understanding Rack Size Determination:
* The size of a rack for installation is determined by the dimensions of the equipment to be housed in it, primarily focusing on the depth and height of the devices.
* Switch Depth:
* Depth of Equipment:The depth of network switches and other rack-mounted devices directly influences the depth of the rack. If the equipment is deeper, a deeper rack is required to accommodate it.
* Industry Standards:Most racks come in standard depths, but it is essential to match the depth of the rack to the deepest piece of equipment to ensure proper fit and airflow.
* Server Height:
* Height of Equipment:The height of servers and other devices is measured in rack units (U), where 1U equals 1.75 inches. The total height of all equipment determines the overall height requirement of the rack.
* Rack Units:A rack's height is typically described in terms of the number of rack units it can accommodate, such as 42U, 48U, etc.
* Why Other Options are Less Relevant:
* KVM Size:While important for management, KVM (Keyboard, Video, Mouse) switches do not typically determine rack size.
* Hard Drive Size:Individual hard drives are installed within servers or storage devices, not
* directly influencing rack dimensions.
* Cooling Fan Speed:Fan speed affects cooling but not the physical size of the rack.
* Outlet Amperage:Power requirements do not determine rack dimensions but rather the electrical infrastructure supporting the rack.
References:
* CompTIA Network+ study materials on rack installation and equipment sizing.
NEW QUESTION # 339
A network administrator needs to divide a Class B network into four equal subnets, each with a host range of 1,000 hosts. Which of the following subnet masks should the administrator use?
Answer: C
Explanation:
A 255.255.252.0 subnet mask provides 1,022 usable host addresses per subnet, which supports the required 1,000 hosts while dividing the Class B address space into appropriately sized equal subnets.
NEW QUESTION # 340
The network engineering team needs to implement a wireless network within two separate buildings. Once the network is set up, users will need to authenticate using RADIUS in order to access internal resources. Which of the following wireless technologies should the team implement?
Answer: D
Explanation:
Enterprise wireless networks support robust security features such as RADIUS (Remote Authentication Dial-In User Service) for user authentication, making them ideal for environments where secure access to internal resources is required. This technology allows for centralized authentication and policy enforcement, ensuring that users can securely connect to the network.
Additionally, enterprise wireless networks support more complex configurations, such as multiple access points spanning multiple buildings, which is needed in this case.
NEW QUESTION # 341
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