System Administrator 2026 — Test 45

Correct Answer: A. A. Collision detection
Explanation: Collision detection is not possible in wireless LAN with no extensions. Collision detection techniques for multiple access like CSMA/CD are used to detect collisions in Wireless LANs.

Correct Answer: B. B. Security algorithm for wireless networks
Explanation: WEP is a security algorithm for wireless network which intended to provide data confidentiality comparable to that of traditional wired networks. It was introduced in 1997.

Correct Answer: A. A. Wi-fi protected access
Explanation: WPA or WiFi Protected Access is a security protocol used to provide users and firms with strong data security and protection for their wireless networks (WiFi) to give them confidence that only authorized users can access their network.

Correct Answer: D. D. All of the mentioned
Explanation: PING (Packet Internet Groper) command is the best way to test connectivity between two nodes, whether it is Local Area Network (LAN) or Wide Area Network (WAN). Ping uses ICMP (Internet Control Message Protocol) to communicate to other devices.

Correct Answer: B. B. Nmap
Explanation: A ping sweep is a method that can establish a range of IP addresses which map to live hosts and are mostly used by network scanning tools like nmap. A ping sweep is basically a collective ping command execution on a range of IP addresses.

Correct Answer: D. D. Both ping & traceroute
Explanation: ICMP stands for Internet Control Message Protocol. ICMP operates over the IP packet to provide error reporting functionality, so in case the node is not active or there is no route, ICMP will be used to report the specific errors for Ping and Traceroute.

Correct Answer: A. A. Route
Explanation: The route command is used to view and manipulate the TCP/IP routing table in Windows OS. The manipulations done in the routing table with the help of this command will count as static routes.

Correct Answer: D. D. Traceroute
Explanation: Traceroute command is available on Linux OS to find the path i.e. the number of the routers that the packet has to go through to reach the destination. In Windows, Tracert command is used to perform the function.

Correct Answer: D. D. Trace the routers in the path to destination
Explanation: The Tracert command is available on Microsoft Windows to find the path i.e. the number of the routers that the packet has to go through to reach its destination.

Correct Answer: A. A. Domain check
Explanation: There are billions of domains available for registration on the World Wide Web, and many of them are already registered. So when one wants to register a domain, they need to check whether the domain is available through a domain check.