N10-008 practice questions 381–390

1. Question 381 · 871 in bank

   An administrator is investigating reports of network slowness in a building. While looking at the uplink interface statistics in the switch's CLI, the administrator discovers the uplink is at 100% utilization. However, the administrator is unsure how to identify what traffic is causing the saturation. Which of the following tools should the administrator utilize to identify the source and destination addresses of the traffic?

   • ASNMP
   • BTraps
   • CSyslog
   • DNetFlow

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   Answer: D

   Explanation

   The tool the administrator should utilize to identify the source and destination addresses of the traffic is D. NetFlow. NetFlow is a network protocol used by network devices such as routers and switches to collect IP traffic data and send it to a collector or analyzer for analysis. NetFlow provides detailed information about network traffic, including source and destination addresses, application protocols, and traffic volumes. By configuring NetFlow on the switch, the administrator can capture and analyze the traffic data to identify the source and destination addresses of the traffic causing the network slowness. This information can be used to optimize network performance and troubleshoot network issues.

   Source: Adapted from community discussion — StellarSteve

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2. Question 382 · 871 in bank

   Two new network switches located in different buildings are connected together with single-mode fiber. However, no link exists between the two switches. Which of the following steps should the technician perform FIRST to troubleshoot the issue?

   • AReverse TX/RX on the fiber patch cord at one building.
   • BReplace the fiber patch cords in both buildings.
   • CClean the fiber patch cord connectors in both buildings.
   • DConnect the fiber patch cord to an OTDR at one building.

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   Answer: A

   Explanation

   A. Tx/Rx being reversed is common and the fastest way of verifying. Spending time walking/driving between buildings is not efficient to clean the connectors or use an OTDR.

   Source: Adapted from community discussion — 1stAid

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3. Question 383 · 871 in bank

   Which of the following OSI model layers would allow a user to access and download files from a remote computer?

   • ASession
   • BPresentation
   • CNetwork
   • DApplication

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   Answer: D

   Explanation

   Silly question. You need ALL the layers to establish a connection to a remote computer/device. Its arguable that ALL layers are just as important as each other

   Source: Adapted from community discussion — PatrickH

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4. Question 384 · 871 in bank

   A new office space is being designed. The network switches are up, but no services are running yet. A network engineer plugs in a laptop configured as a DHCP client to a switch. Which of the following IP addresses should be assigned to the laptop?

   • A10.1.1.1
   • B169.254.1.128
   • C172.16.128.128
   • D192.168.0.1

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   Answer: B

   Explanation

   If no DHCP server is running yet, the laptop will be assigned a self-assigned IP address in the Automatic Private IP Addressing (APIPA) range. The APIPA range is 169.254.0.1 through 169.254.255.254. Therefore, the correct answer is B. 169.254.1.128.

   Source: Adapted from community discussion — StellarSteve

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5. Question 385 · 871 in bank

   An organization requires the ability to send encrypted email messages to a partner from an email server that is hosted on premises. The organization prefers to use the standard default ports when creating firewall rules. Which of the following ports should be open to satisfy the requirements?

   • A110
   • B143
   • C587
   • D636

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   Answer: C

   Explanation

   The correct answer is C. Port 587 is used for email message submission, typically by clients to an email server. It supports the encrypted transmission of email messages using Transport Layer Security (TLS) or Secure Sockets Layer (SSL). Ports 110 and 143 are used for email retrieval by clients from an email server. Port 636 is used for LDAP over SSL.

   Source: Adapted from community discussion — StellarSteve

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6. Question 386 · 871 in bank

   Which of the following BEST describes a split-tunnel client-to-server VPN connection?

   • AThe client sends all network traffic down the VPN tunnel.
   • BThe client has two different IP addresses that can be connected to a remote site from two different ISPs to ensure availability.
   • CThe client sends some network traffic down the VPN tunnel and other traffic to the local gateway.
   • DThe client connects to multiple remote sites at the same time.

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   Answer: C

   Explanation

   C. The client sends some network traffic down the VPN tunnel and other traffic to the local gateway. In a split-tunnel VPN, only certain network traffic (usually traffic destined for the remote network) is sent over the VPN tunnel, while other traffic is sent directly to the local gateway and out to the internet. This can improve overall network performance for the user, but can also introduce some security risks if the local network is not properly secured.

   Source: Adapted from community discussion — StellarSteve

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7. Question 387 · 871 in bank

   Which of the following is the MOST secure connection used to inspect and provide controlled internet access when remote employees are connected to the corporate network?

   • ASite-to-site VPN
   • BFull-tunnel VPN
   • CSplit-tunnel VPN
   • DSSH

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   Answer: B

   Explanation

   the MOST secure connection would be a full-tunnel VPN. This is because all traffic from the remote device is sent through the VPN and encrypted, rather than just specific traffic as with a split-tunnel VPN.

   Source: Adapted from community discussion — StellarSteve

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8. Question 388 · 871 in bank

   A network administrator needs to query the NSs for a remote application. Which of the following commands would BEST help the administrator accomplish this task?

   • Adig
   • Barp
   • Cshow interface
   • Dhostname

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   Answer: A

   Explanation

   The Linux/Unix dig (short for domain information groper) utility does the exact same thing as nslookup. It’s primarily a command-line utility that allows you to perform a single DNS lookup for a specific entity, but it can also be employed in batch mode for a series of lookups.

   Source: Adapted from community discussion — Pongsathorn

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9. Question 389 · 871 in bank

   An engineer is troubleshooting poor performance on the network that occurs during work hours. Which of the following should the engineer do to improve performance?

   • AReplace the patch cables.
   • BCreate link aggregation.
   • CCreate separation rules on the firewall.
   • DCreate subinterfaces on the existing port.

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   Answer: B

   Explanation

   If the poor network performance is happening during work hours, it could be due to high network traffic. Therefore, to improve performance, the engineer should create link aggregation to increase the available bandwidth. The correct answer is B - Create link aggregation.

   Source: Adapted from community discussion — Doaa81

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10. Question 390 · 871 in bank

    A customer reports there is no access to resources following the replacement of switches. A technician goes to the site to examine the configuration and discovers redundant links between two switches. Which of the following is the reason the network is not functional?

    • AThe ARP cache has become corrupt.
    • BCSMA/CD protocols have failed.
    • CSTP is not configured.
    • DThe switches are incompatible models.

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    Answer: C

    Explanation

    The reason the network is not functional due to redundant links between the two switches is likely that Spanning Tree Protocol (STP) is not configured. STP prevents loops in a network topology and disables redundant paths that could cause data loops or broadcast storms. The presence of redundant links without STP can cause network instability and congestion.

    Source: Adapted from community discussion — StellarSteve

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N10-008 practice, question 381. 871 questions available.