Question 1

When configuring a new switch in a packet-switched network, which of the following helps protect against network loops?

Accepted Answer

Spanning tree is a protocol used to prevent network loops by creating a loop-free logical topology in Ethernet networks.

Question 2

After rebooting a PC, a user is no longer able to connect to the corporate network. As a test, the technician plugs a different laptop into the same network jack and receives an IP address of 169.254.112.137. Which of the following is MOST likely causing the issue?

Accepted Answer

A 169.254.x.x IP address indicates that the device is using an APIPA address, which typically happens when a DHCP server is unreachable or its scope is exhausted.

Question 3

A company has just installed a new cloud VoIP solution; however, users occasionally report poor call quality or dead air being present. Which of the following describes the NEXT troubleshooting step the technician should take?

Accepted Answer

Running ping tests on the Internet line to monitor for packet loss and latency can help identify network issues affecting call quality, such as delays or interruptions in data transmission.

Question 4

A network technician notices that most of the nodes in the 10.10.74.0/23 address space return either 1 or 2 node hop after running a tracert ; however, some of the new servers are showing a hop count larger than 10. Which of the following is the MOST likely reason for this?

Accepted Answer

New servers being provisioned in the cloud would likely result in a higher hop count due to the physical distance and network infrastructure between the local network and the cloud provider.

Question 5

Which of the following MUST be installed on an employee's computer if the remote access VPN implements an SSL VPN with PKI authentication?

Accepted Answer

A private certificate is necessary for PKI authentication in an SSL VPN setup, as it is used to authenticate the user's identity.

Question 6

Management requires remote access to network devices when the ISP is down. Which of the following devices would provide the BEST solution?

Accepted Answer

The answer of Management requires remote access to network devices...

Question 7

Two computers are connected to a multilayer switch, and both can access the corporate file server. The computers cannot talk to one another. Which of the following is MOST likely the cause?

Accepted Answer

An ACL (Access Control List) misconfiguration is likely preventing the computers from communicating with each other while still allowing access to the file server.

Question 8

The length of an IPv6 address is:

Accepted Answer

An IPv6 address is 128 bits long, which allows for a significantly larger number of unique IP addresses compared to the 32-bit IPv4 addresses.

Question 9

A technician has installed multiple new PC clients and is connecting them to the network. Only one client is receiving IP addressing information. Which of the following should the technician verify as the NEXT troubleshooting step?

Accepted Answer

The technician should verify the DHCP scope to ensure it has enough available IP addresses to assign to all the new clients. If only one client is receiving an IP address, the scope might be exhausted or misconfigured.

Question 10

A network technician is troubleshooting a problem with a user's client-to-site VPN connection. The user is unable to establish a connection to the server, but the error message that appears on screen does not contain useful information. Which of the following should the technician do NEXT to troubleshoot the issue?

Accepted Answer

Reviewing the logs in the VPN client can provide detailed information about the connection attempt and help identify the cause of the issue.

Question 11

A network technician travels to a remote office to set up a new SOHO for the company. Wireless networking should be used at the remote office. The network technician sets up all the related wireless network equipment, and the last step is to connect the users' devices to the company network. To complete this step, which of the following should be used to secure the remote network location?

Accepted Answer

WPA2/WPA is a security protocol used to secure wireless networks by encrypting data transmitted over the network, making it essential for protecting a wireless network in a SOHO environment.

Question 12

Which of the following should be configured on the network to achieve performance for the FCoE storage traffic?

Accepted Answer

Jumbo frames should be configured to improve performance for FCoE (Fibre Channel over Ethernet) storage traffic as they allow larger packet sizes, reducing overhead and increasing efficiency.

Question 13

A network administrator wants to narrow the scope of a subnet to two usable IP addresses within a class C network. Which of the following is the correct CIDR notation?

Accepted Answer

A /30 subnet provides 4 IP addresses, 2 of which are usable for hosts, making it suitable for the requirement. Option C is a class C network with a /30 subnet.

Question 14

A technician is troubleshooting intermittent connectivity on a line-of-sight wireless bridge. Which of the following tools should the technician use to determine the cause of the packet loss?

Accepted Answer

A spectrum analyzer is used to measure the power of the spectrum of known and unknown signals, which can help identify interference or signal issues causing packet loss in wireless communications.

Question 15

Which of the following default ports should be opened on a firewall to allow for SSH and Telnet? (Choose two.)

Accepted Answer

SSH uses port 22 and Telnet uses port 23 by default.

Question 16

Which of the following should be configured to allow for IP-to-name resolutions?

Accepted Answer

PTR (Pointer) records are used in DNS to map an IP address to a hostname, allowing for reverse DNS lookups, which is the process of resolving an IP address to a domain name.

Question 17

A network administrator is purchasing a mobile phone for a manager who is traveling internationally. The phone needs to be able to make and receive calls in multiple countries outside of North America. Which of the following cellular technologies should the administrator look for in the phone?

Accepted Answer

GSM is a global cellular technology that is used in most countries outside of North America.

Question 18

Which of the following WAN technologies swaps the header on a packet when internally switching from one provider router to another?

Accepted Answer

MPLS (Multiprotocol Label Switching) swaps labels (headers) on packets as they move from one router to another within the provider's network, allowing for efficient and flexible data routing.

Question 19

A network technician needs to configure a device with an embedded OS so it can be connected to a wireless handheld scanner. Which of the following technologies should be configured on the OS to create the wireless connection?

Accepted Answer

Ad hoc mode allows devices to connect directly to each other without a central access point, which is suitable for connecting a device with an embedded OS to a wireless handheld scanner.

Question 20

A network administrator is downloading a large patch that will be uploaded to several enterprise switches simultaneously during the day's upgrade cycle. Which of the following should the administrator do to help ensure the upgrade process will be less likely to cause problems with the switches?

Accepted Answer

The answer of A network administrator is downloading a large...

Exam 10: CompTIA Network+