N10-008 practice questions 421–430

1. Question 421 · 871 in bank

   An application team is deploying a new application. The application team would like the network team to monitor network performance and create alerts if fluctuations in the round-trip time occur for that traffic. Which of the following should the network team monitor to meet this requirement?

   • ABandwidth
   • BLatency
   • CLoss
   • DCyclic redundancy check

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   Answer: B

   Explanation

   gpt: B. Latency To monitor and create alerts for fluctuations in round-trip time (which is a measure of latency), the network team should monitor latency. Latency represents the time it takes for data to travel from the source to the destination and back, essentially measuring the delay in network communication. Fluctuations in round-trip time can indicate network performance issues, congestion, or other problems that may affect the application's performance. Monitoring latency allows the network team to track and analyze the variations in round-trip time, enabling them to set thresholds for alerts when latency exceeds acceptable levels for the specific application. This proactive monitoring helps ensure optimal application performance and a good user experience.

   Source: Adapted from community discussion — Cbcyber

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2. Question 422 · 871 in bank

   A network administrator is configuring Neighbor Discovery Protocol in an IPv6 network to ensure an attacker cannot spoof link-layer addresses of network devices. Which of the following should the administrator implement?

   • AMAC filtering
   • BRouter Advertisement Guard
   • CPort security
   • DDNSSEC

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   Answer: B

   Explanation

   It is B. Router Advertisement Guard is a security feature that protects against rogue router advertisements. It ensures that only authorized routers can send router advertisements on the network. By enabling Router Advertisement Guard, the administrator can prevent attackers from injecting fake or malicious router advertisements that could potentially lead to address spoofing.

   Source: Adapted from community discussion — S5Networking

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3. Question 423 · 871 in bank

   A network architect is developing documentation for an upcoming IPv4/IPv6 dual-stack implementation. The architect wants to shorten the following IPv6 address: ef82:0000:0000:0000:0000:1ab1:1234:1bc2. Which of the following is the MOST appropriate shortened version?

   • Aef82:0:1ab1:1234:1bc2
   • Bef82:0::1ab1:1234:1bc2
   • Cef82:0:0:0:0:1ab1:1234:1bc2
   • Def82::1ab1:1234:1bc2

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   Answer: D

   Explanation

   I used v4 and got this D. ef82::1ab1:1234:1bc2 is the MOST appropriate shortened version. In IPv6, the "::" notation can be used to represent one or more groups of consecutive zeros in an address. The "::" can only be used once in an address, as using it more than once would create ambiguity in identifying the exact number of zeros being represented. In the given IPv6 address, the first four groups of zeros can be represented by "::", as there are consecutive zeros in these groups. Therefore, the shortened version of the IPv6 address is: ef82::1ab1:1234:1bc2

   Source: Adapted from community discussion — user82

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4. Question 424 · 871 in bank

   Which of the following default ports is MOST likely used to send availability and environmental messages about specific devices across the network?

   • A23
   • B53
   • C389
   • D514
   • E3306

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   Answer: D

   Explanation

   FTP – 20, 21 SSH, SFTP – 22 TELNET – 23 SMTP – 25 DNS – 53 DHCP – 67, 68 TFTP – 69 HTTP – 80 POP3 – 110 NTP – 123 NetBIOS – 137–139 IMAP – 143 SNMP – 161/162 LDAP – 389 HTTPS – 443 SMB – 445 Syslog – 514 SMTP TLS – 587 LDAPS – 636 IMAP over SSL – 993 POP3 over SSL –995 Structured Query Language (SQL) Server – 1433 SQLnet –1521 H.323 – 1720 MGCP – 2427/2727 MySQL –3306 RDP – 3389 RTP – 5004/5005 SIP – 5060/5061

   Source: Adapted from community discussion — kinny4000

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5. Question 425 · 871 in bank

   A newly installed multifunction copier needs to be set up so scanned documents can be emailed to recipients. Which of the following ports from the copier’s IP address should be allowed?

   • A22
   • B25
   • C53
   • D80

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   Answer: B

   Explanation

   Port 25: This port is specifically designated for SMTP (Simple Mail Transfer Protocol), the standard protocol used for sending email messages. Sending Scanned Documents via Email: The copier needs to communicate with an email server to send the scanned documents as email attachments. Allowing outbound traffic on port 25 from the copier's IP address enables this communication. Purpose of Other Ports: A. 22: SSH (Secure Shell), used for secure remote access C. 53: DNS (Domain Name System), used for domain name resolution D. 80: HTTP (Hypertext Transfer Protocol), used for web browsing

   Source: Adapted from community discussion — Jay987654

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6. Question 426 · 871 in bank

   Which of the following has the capability to centrally manage configuration, logging, and firmware versioning for distributed devices?

   • AWLAN controller
   • BLoad balancer
   • CSIEM solution
   • DSyslog server

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   Answer: A

   Explanation

   GPT: WLAN (Wireless Local Area Network) controllers are devices used to manage and control wireless access points (APs) in a centralized manner. They provide a single point of management for a large number of distributed APs, and allow administrators to configure, monitor, and troubleshoot the wireless network from a central location. In addition to managing wireless network settings, WLAN controllers can also manage the configuration, logging, and firmware versioning for the distributed APs.

   Source: Adapted from community discussion — BayOne

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7. Question 427 · 871 in bank

   A PC and a network connectivity, and a help desk technician is attempting to resolve the issue. The technician plans to run a constant ping command from a Windows workstation while testing various possible reasons for the connectivity issue. Which of the following should the technician use?

   • Aping -w
   • Bping -i
   • Cping -s
   • Dping -t

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   Answer: D

   Explanation

   From chat GPT-3.5 hoping in with everyone else with some further clarification from everyone's favorite AI The option that the technician should use in this scenario is D) ping -t. The ping command is used to test the connectivity between two devices on a network by sending ICMP echo request packets to the destination device and waiting for a response. The -t option in the ping command is used to send continuous ping requests until the command is stopped by the user. This is useful in situations where a technician needs to monitor the network connectivity over a period of time to identify intermittent connectivity issues. The other options in the ping command are: ping -w: specifies the time in milliseconds to wait for a response before timing out and sending another ping request. ping -i: specifies the time interval in seconds between successive ping requests. ping -s: specifies the size of the ping packet in bytes. While these options can be useful in different scenarios when using the ping command, they are not relevant for the scenario described in the question. Therefore, the correct option for this scenario is D) ping -t.

   Source: Adapted from community discussion — Sinfulonsunday

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8. Question 428 · 871 in bank

   Which of the following is the MOST effective security control to keep a company’s physical perimeter protected against intrusions leveraged by social-engineering techniques?

   • AEmployee training
   • BBiometric lockers
   • CAccess control vestibule
   • DMotion detection

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   Answer: A

   Explanation

   It is 100% A. Working as a hospitals system administrator, I can I assure you that even a $10,000,000 physical security system is only as good as your dumbest employee. The KEY WORD here is social engineering, with a sucessfull social engineering attempt an uneducated user can be tricked into opening the door, No auth needed. End users are the biggest risk, train them

   Source: Adapted from community discussion — f75c735

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9. Question 429 · 871 in bank

   A customer called the help desk to report a network issue. The customer recently added a hub between the switch and the router in order to duplicate the traffic flow to a logging device. After adding the hub, all the other network components that were connected to the switch slowed more than expected. Which of the following is the MOST likely cause of the issue?

   • ADuplex mismatch
   • BFlow control failure
   • CSTP malfunction
   • D802.1Q disabled

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   Answer: A

   Explanation

   Duplex Mismatch is what causes the issue and Flow Control is what can fix the issue. I will go with A. IMHO Yes hubs work with Half Duplex and Switch is Full. You cant make a hub work in full duplex there is no setting on it. Hubs are notorious about these broadcast storms linked to being half duplex devices and the fix for it is Flow control. The Core reason is hub being half duplex alternative is the Flow Control might have failed. I will go for the MAIN reason

   Source: Adapted from community discussion — Aliyan

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10. Question 430 · 871 in bank

    A network administrator is implementing OSPF on all of a company's network devices. Which of the following will MOST likely replace all the company's hubs?

    • AA Layer 3 switch
    • BA proxy server
    • CA NGFW
    • DA WLAN controller

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    Answer: A

    Explanation

    - A layer 3 switch is a type of network switch that can perform routing functions in addition to the basic switching functions of a layer 2 switch. OSPF (Open Shortest Path First) is a routing protocol used for distributing routing information within a single autonomous system (AS) and improving the routing efficiency and reliability within a network.

    Source: Adapted from community discussion — StevenElev11n

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N10-008 practice, question 421. 871 questions available.