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web.groovymark@gmail.com
- December 3, 2024
Question 41
What tool can be used to simulate network traffic and test for performance issues in a network?
a) Wireshark
b) ipconfig
c) traceroute
d) iPerf
Correct Answer: d) iPerf
Explanation: iPerf is a tool used to generate and test network performance by simulating traffic between two devices.
Question 42
Which of the following is an example of a multicast IP address?
a) 192.168.1.1
b) 127.0.0.1
c) 224.0.0.5
d) 8.8.8.8
Correct Answer: c) 224.0.0.5
Explanation: 224.0.0.5 is a multicast IP address, used for communication with multiple devices on a network.
Question 43
What is the default gateway for devices on a network?
a) The DNS server
b) The IP address of the nearest switch
c) The IP address of the router
d) The IP address of the server
Correct Answer: c) The IP address of the router
Explanation: The default gateway is typically the IP address of the router that connects the local network to other networks, including the internet.
Question 44
What is the primary purpose of the Address Resolution Protocol (ARP)?
a) To resolve domain names to IP addresses
b) To assign IP addresses to devices
c) To translate MAC addresses to IP addresses
d) To resolve IP addresses to MAC addresses
Correct Answer: d) To resolve IP addresses to MAC addresses
Explanation: ARP is used to map IP addresses to MAC addresses on a local network, allowing devices to communicate.
Question 45
Which of the following network devices operates at Layer 1 of the OSI model?
a) Switch
b) Router
c) Repeater
d) Firewall
Correct Answer: c) Repeater
Explanation: Repeaters operate at Layer 1 (Physical layer) of the OSI model by boosting signal strength over long distances.
Question 46
What is the purpose of ICMP in network communications?
a) To transfer files between devices
b) To resolve IP addresses
c) To send error messages and operational information
d) To assign IP addresses
Correct Answer: c) To send error messages and operational information
Explanation: ICMP (Internet Control Message Protocol) is used to send error messages and operational information about network issues.
Question 47
Which of the following cable types is most susceptible to electromagnetic interference (EMI)?
a) Fiber optic
b) Coaxial
c) Twisted pair
d) Shielded twisted pair
Correct Answer: c) Twisted pair
Explanation: Standard twisted pair cables (UTP) are more susceptible to electromagnetic interference compared to fiber optic and shielded cables.
Question 48
What does a traceroute command do?
a) It tests the connectivity between two devices.
b) It displays the route taken by packets across a network.
c) It assigns an IP address to a device.
d) It monitors network traffic in real time.
Correct Answer: b) It displays the route taken by packets across a network.
Explanation: Traceroute shows the path packets take through routers to reach a destination.
Question 49
Which protocol is used for encrypted remote access to network devices?
a) FTP
b) Telnet
c) SSH
d) RDP
Correct Answer: c) SSH
Explanation: SSH (Secure Shell) provides encrypted remote access to network devices.
Question 50
What does the TTL field in an IP packet represent?
a) Time the packet was created
b) Time to live before the packet is discarded
c) Total transmission latency
d) Time the packet was received
Correct Answer: b) Time to live before the packet is discarded
Explanation: The TTL (Time to Live) field represents the number of hops a packet can make before being discarded, helping prevent routing loops.
