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NEW QUESTION # 32
A support technician examines the front panel of a Cisco switch and sees 4 Ethernet cables connected in the first four ports. Ports 1, 2, and 3 have a green LED. Port 4 has a blinking green light.
What is the state of the Port 4?
Answer: C
Explanation:
On a Cisco switch, a port with a blinking green LED typically indicates that the port is up (active) and is currently transmitting or receiving data.
This is a normal state indicating active traffic on the port.
* A. Link is up with cable malfunctions: Usually indicated by an amber or blinking amber light.
* B. Link is up and not stable: Not typically indicated by a green blinking light.
* D. Link is up and there is no activity: Would be indicated by a solid green light without blinking.
Thus, the correct answer is C. Link is up and active.
Reference: =
* Cisco Switch LED Indicators
* Cisco Ethernet Switch LED Patterns
NEW QUESTION # 33
A user reports that a company website is not available. The help desk technician issues a tracert command to determine if the server hosting the website is reachable over the network. The output of the command is shown as follows:
What can you tell from the command output?
Answer: A
Explanation:
The tracert command output shows the path taken to reach the destination IP address, 192.168.1.10. The command output indicates:
*Hops 1 and 2 are successfully reached.
*Hop 3 times out, meaning the router at hop 3 did not respond to the tracert request. However, this does not necessarily indicate a problem with forwarding packets, as some routers may be configured to block or not respond to ICMP requests.
*Hops 4 and 5 are successfully reached, with hop 5 being the destination IP 192.168.1.10, indicating that the server is reachable.
Thus, the correct answer is C. The server with the address 192.168.1.10 is reachable over the network.
References :=
*Cisco Traceroute Command
*Understanding Traceroute
The tracert command output indicates that the server with the address 192.168.1.10 is reachable over the network. The asterisk (*) at hop 3 suggests that the probe sent to that hop did not return a response, which could be due to a variety of reasons such as a firewall blocking ICMP packets or the router at that hop being configured not to respond to ICMP requests. However, since the subsequent hops (4 and 5) are showing response times, it means that the packets are indeed getting through and the server is reachable12.
References :=
*How to Use Traceroute Command to Read Its Results
*How to Use the Tracert Command in Windows
NEW QUESTION # 34
Which device protects the network by permitting or denying traffic based on IP address, port number, or application?
Answer: A
Explanation:
* Firewall: A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It permits or denies traffic based on IP addresses, port numbers, or applications.
* Access Point: This is a device that allows wireless devices to connect to a wired network using Wi-Fi.
It does not perform traffic filtering based on IP, port, or application.
* VPN Gateway: This device allows for secure connections between networks over the internet, but it is not primarily used for traffic filtering based on IP, port, or application.
* Intrusion Detection System (IDS): This device monitors network traffic for suspicious activity and policy violations, but it does not actively permit or deny traffic.
References:
* Understanding Firewalls: Firewall Basics
NEW QUESTION # 35
A Cisco switch is not accessible from the network. You need to view its running configuration.
Which out-of-band method can you use to access it?
Answer: C
Explanation:
Out-of-band management
When a Cisco switch is not accessible from the network, the recommended out-of-band method to access its running configuration is through the console port. Out-of-band management involves accessing the network device through a dedicated management channel that is not part of the data network. The console port provides direct access to the switch's Command Line Interface (CLI) without using the network, which is essential when the switch cannot be accessed remotely via the network12.
References :=
* Out-of-band (OOB) network interface configuration guidelines
* Out of band management configuration
NEW QUESTION # 36
In the network shown in the following graphic, Switch1 is a Layer 2 switch.
PC-A sends a frame to PC-C. Switch1 does not have a mapping entry for the MAC address of PC-C.
Which action does Switch1 take?
Answer: D
Explanation:
In a network, when a Layer 2 switch (like Switch1) receives a frame destined for a MAC address that is not in its MAC address table, it performs a flooding operation. This means the switch will send the frame out of all ports except the port on which the frame was received. This flooding ensures that if the destination device is connected to one of the other ports, it will receive the frame and respond, allowing the switch to learn its MAC address.
A). Switch1 queries Switch2 for the MAC address of PC-C: This does not happen in Layer 2 switches; they do not query other switches for MAC addresses.
A). Switch1 drops the frame and sends an error message back to PC-A: This is not the default behavior for unknown unicast frames.
D). Switch1 sends an ARP request to obtain the MAC address of PC-C: ARP is used by devices to map IP addresses to MAC addresses, not by switches to find unknown MAC addresses.
Thus, the correct answer is
B). Switch1 floods the frame out all active ports except port G0/1.
Reference: =
Cisco Layer 2 Switching Overview
Switching Mechanisms (Cisco)
NEW QUESTION # 37
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