CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 581:

  A network engineer needs to reduce the overhead of file transfers. Which of the following configuration changes would accomplish that goal?

  A. Link aggregation

  B. Jumbo frames

  C. Port security

  D. Flow control

  E. Lower FTP port

  Correct Answer: B

  Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. By increasing the size of the frames, more data can be transferred in a single packet, which reduces the number of packets required to transfer a large file. This reduces the overhead associated with transferring the file, such as the processing required to handle and transmit multiple packets. Jumbo frames can decrease the number of packets and thus increase the speed of file transfers.

• Question 582:

  A technician knows the MAC address of a device and is attempting to find the device's IP address. Which of the following should the technician look at to find the IP address? (Select TWO).

  A. ARP table

  B. DHCP leases

  C. IP route table

  D. DNS cache

  E. MAC address table

  F. STP topology

  Correct Answer: AB

  ARP Table (Address Resolution Protocol): The ARP table maps IP addresses to MAC addresses within a local network segment. When a device wants to communicate with another device on the same network, it uses ARP to resolve the IP address to the corresponding MAC address. The technician can look at the ARP table to find the IP address associated with the known MAC address. DHCP Leases (Dynamic Host Configuration Protocol): DHCP is used to automatically assign IP addresses to devices on a network. DHCP servers maintain a list of leased IP addresses and the corresponding MAC addresses of devices. By checking the DHCP leases, the technician can determine the IP address that was assigned to the device with the known MAC address.

• Question 583:

  During an annual review of policy documents, a company decided to adjust its recovery time frames. The company agreed that critical applications can be down for no more than six hours, and the acceptable amount of data loss is no more than two hours. Which of the following should be documented as the RPO?

  A. Two hours

  B. Four hours

  C. Six hours

  D. Eight hours

  Correct Answer: A

  "RPO designates the variable amount of data that will be lost or will have to be re-entered during network downtime. RTO designates the amount of "real time" that can pass before the disruption begins to seriously and unacceptably impede the flow of normal business operations."

• Question 584:

  A device is connected to a managed Layer 3 network switch. The MAC address of the device is known, but the static IP address assigned to the device is not. Which of the following features of a Layer 3 network switch should be used to determine the IPv4 address of the device?

  A. MAC table

  B. Neighbor Discovery Protocol

  C. ARP table

  D. IPConfig

  E. ACL table

  Correct Answer: C

  The ARP table is a database that is used by a device to map MAC addresses to their corresponding IP addresses. When a device sends a packet to another device on the same network, it uses the MAC address of the destination device to deliver the packet. The ARP table allows the device to determine the IP address of the destination device based on its MAC address.

• Question 585:

  Which of the following connectors and terminations are required to make a Cat 6 cable that connects from a PC to a non-capable MDIX switch? (Select TWO).

  A. T1A-568-A - TIA-568-B

  B. TIA-568-B - TIA-568-B

  C. RJ11

  D. RJ45

  E. F-type

  Correct Answer: BD

  TIA-568-B: TIA-568-B : TIA-568 is a standard for commercial building telecommunications cabling. TIA-568-B is a standard for terminating twisted pair cables, it is commonly used in networking. The TIA-568-B standard is used for both ends of the cable, as the switch is not capable of Auto-MDI-X. This means that the cable ends must be wired in a specific way to ensure that the correct connections are made. RJ45: RJ45 is a type of connector commonly used for Ethernet cables. It is a 8-pin connector that is used to connect twisted-pair cables to networking devices such as switches, routers, and PCs.

• Question 586:

  Which of the following types of attacks can be used to gain credentials by setting up rogue APs with identical corporate SSIDs?

  A. VLAN hopping

  B. Evil twin

  C. DNS poisoning

  D. Social engineering

  Correct Answer: B

  evil twin, attacker AP setup with for example Starbucks1Guest to get you to attach, you still get out to internet but attacker can see all you do. FYI always use VPN when in public WIFI, or better yet NEVER EVER attach to any public WIFI use your cell service instead w/ VPN on of course.

• Question 587:

  A user reports that a new VoIP phone works properly but the computer that is connected to the phone cannot access any network resources. Which of the following MOST Likely needs to be configured correctly to provide network connectivity to the computer?

  A. Port duplex settings

  B. Port aggregation

  C. ARP settings

  D. VLAN tags

  E. MDIX settings

  Correct Answer: A

• Question 588:

  A network technician is performing tests on a potentially faulty network card that is installed in a server. Which of the following addresses will MOST likely be used during traffic diagnostic tests?

  A. 10.10.10.10

  B. 127.0.0.1

  C. 192.168.0.1

  D. 255.255.255.0

  Correct Answer: B

  127.0.0.1 is the loopback address, it is used to test the functionality of a network card by sending traffic to the card and then verifying that it is received properly. This address is used because it is guaranteed to always point to the local host, regardless of the network configuration. The IP address range for loopback addresses is 127.0.0.0/8.

• Question 589:

  The power company notifies a network administrator that it will be turning off the power to the building over the weekend. Which of the following is the BEST solution to prevent the servers from going down?

  A. Redundant power supplies

  B. Uninterruptible power supply

  C. Generator

  D. Power distribution unit

  Correct Answer: C

  UPS is an almost instant battery backup that prevents your devices and power from being interrupted, while generators have a longer start up time. Generators provide a much longer lasting backup power supply and can sustain your business for much longer than a UPS.

• Question 590:

  An employee reports to a network administrator that internet access is not working. Which of the following should the administrator do FIRST?

  A. Establish a theory of probable cause.

  B. Identify symptoms.

  C. Determine if anything has changed.

  D. Ask the user to restart the computer.

  Correct Answer: B