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Network+ > Donderdag 751-877 > Flashcards

Donderdag 751-877 Flashcards

1
Q

A Wi-Fi network was recently deployed in a new, multilevel building. Several issues are now being reported related to latency and drops in coverage. Which of the following is the first step to troubleshoot the issues?

A.Create a network diagram.
B.Review the AP placement.
C.Monitor channel utilization.
D.Test cable attenuation.

A

Answer: C

Explanation:
Correct answer is C:Monitor channel utilization.

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2
Q

Users report that a database server responds slowly or drops connections to other servers at random during busy times. A technician notices the database and servers are connected to an access switch in the office. Which of the following should the technician do to improve the performance of the database server?

A.Use different ports on the access switch.
B.Implement LACP on the connection to the database server.
C.Move the cable connection for users to the same switch as the database server.
D.Move the server connection from the access switch to the core switch.

A

Answer: D

Explanation:
Move the server connection from the access switch to the core switch.

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3
Q

Which of the following attacks can be effectively protected against by using techniques to check if a connection was made by a human user? (Choose two.)

A.Brute-force
B.Dictionary
C.On-path attack
D.Phishing
E.Shoulder surfing
F.Evil twin

A

Answer: AB

Explanation:
A.Brute-force

B.Dictionary

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3
Q

Which of the following is most closely associated with the management plane?

A.Routing table
B.Current configuration
C.File operations
D.Console port

A

Answer: B

Explanation:
Correct answer is B

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4
Q

A network technician is configuring a new subnet on the distribution switch to support 15 network printers. Which of the following available subnets is the best choice to support all 15 printers on the LAN?

A.10.1.15.0/27
B.10.8.4.0/30
C.10.10.8.0/28
D.10.15.1.0/29

A

Answer: A

Explanation:
Correct answer is A:10.1.15.0/27.

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5
Q

A technician is working on a ticket for a user in the human resources department who received a new PC that does not connect to the internet. All users in human resources can access the internet. The technician can ping the PC from the human resources router but not from the IT network. Which of the following is the most likely cause of the issue?

A.Duplicate IP address
B.Misconfigured RIP
C.Improper VLAN assignment
D.Incorrect default gateway

A

Answer: D

Explanation:
Correct answer is D:Incorrect default gateway

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5
Q

Users report that the network is slower than usual when accessing on-premises email. Which of the following should a network technician do to confirm the issue?

A.Review the logging levels of network devices.
B.Check the audit logs to see if users are accessing email
C.Compare the network baselines to the current network status.
D.Verify that users who are trying to access email have LDAP accounts

A

Answer: C

Explanation:
Compare the network baselines to the current network status.

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5
Q

Which of the following is a hybrid routing protocol?

A.BGP
B.RIPv2
C.OSPF
D.EIGRP

A

Answer: D

Explanation:
Correct answer is D:EIGRP.

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6
Q

A network technician is troubleshooting a port channel issue. When logging in to one of the switches, the technician sees the following information displayed:

Native VLAN mismatch detected on interface g0/1

Which of the following layers of the OSI model is most likely to be where the issue resides?
A.Layer 2
B.Layer 3
C.Layer 5
D.Layer 6

A

Answer: A

Explanation:
Layer 2.VLAN (Virtual Local Area Network) and port channel configurations occur at Layer 2 (Data Link layer) of the OSI model because they deal with the segmentation and aggregation of network traffic at the Ethernet frame level

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6
Q

A company’s cloud model consists of the following:

*An on-premises data center
*An IaaS cloud provider
*A private-direct connection from on premises to IaaS

Which of the following best describes the deployment model the company is using?
A.Public
B.Private
C.Hybrid
D.Community

A

Answer: C

Explanation:
On premesis data center + private cloud = hybrid.

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7
Q

A software developer changed positions within a company and is now a sales engineer. The security team discovered that the former software developer had been modifying code to implement small features requested by customers. Which of the following would be the best thing for the security administrator to implement to prevent this from happening?

A.A software patching policy
B.A role-based access control policy
C.Firewalls on the software development servers
D.Longer and more complex password requirements

A

Answer: A

Explanation:
A software patching policy.

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8
Q

A technician is configuring a wireless access point in a public space for guests to use. Which of the following should the technician configure so that only approved connections are allowed?

A.Geofencing
B.Captive portal
C.Secure SNMP
D.Private VLANs

A

Answer: B

Explanation:
Correct answer is B:Captive portal.

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8
Q

Users in a remote office report that corporate web server pages are taking a long time to load, whereas users in the main corporate office do not have any issues. Which of the following is the best metric for a network administrator to check?

A.Jitter across the network
B.Hop-by-hop network latency
C.Server interface CRC errors
D.Server NetFlow data

A

Answer: D

Explanation:
The answer is D. Server NetFlow data, when you it states that “Server NetFlow data provides insights into the traffic patterns and volume going to and from the server. By analyzing this data, the network administrator can identify any anomalies or bottlenecks that may be causing the slowdown specifically for users in the remote office. This could include factors such as high traffic volume, network congestion, or packet loss.”

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9
Q

A user returns to the office after working remotely for an extended period. The user is reporting limited access to the office wireless network and the inability to reach company resources on the network. The user connected to the guest network, ensured all patches were applied, and checked to make sure software was up to date. Which of the following is most likely the cause of the issue?

A.The laptop drivers need to be updated to support a new wireless infrastructure.
B.The wireless passphrase has been cycled and needs to be updated.
C.The NAC appliance has labeled the laptop as non-complaint.
D.The WAP transmit power is too low and cannot complete user authentication.

A

Answer: C

Explanation:
The NAC appliance has labeled the laptop as non-complaint.

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10
Q

Which of the following is the most accurate NTP time source that is capable of being accessed across a network connection?

A.Stratum 0 device
B.Stratum 1 device
C.Stratum 7 device
D.Stratum 16 device

A

Answer: B

Explanation:
Stratum 1 device.

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11
Q

Which of the following should be used to manage outside cables that need to be routed to various multimode uplinks?

A.Fiber distribution panel
B.110 punchdown block
C.PDU
D.TIA/EIA-568A patch bay
E.Cat 6 patch panel

A

Answer: A

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12
Q

An online gaming company needs a cloud solution that will allow for more virtual resources to be deployed when tournaments are held. The number of users who access the service increases during tournaments. The company also needs the resources to return to baseline levels once the resources are not needed in order to reduce cost. Which of the following cloud concepts would provide the best solution?

A.Scalability
B.Hybrid
C.Multitenancy
D.Elasticity

A

Answer: D

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13
Q

A technician reviews a network performance report and finds a high level of collisions happening on the network. At which of the following layers of the OSI model would these collisions be found?

A.Layer 1
B.Layer 3
C.Layer 4
D.Layer 7

A

Answer: A

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14
Q

A technician is troubleshooting servers with high CPU usage. While trying to connect, the technician needs to open a port for remote access. Which of the following ports should the technician open?

A.443
B.3321
C.8080
D.5900

A

Answer: D

14
Q

A network engineer needs to change an entire subnet of SLAAC-configured workstation addresses. Which of the following methods would be the best for the engineer to use?

A.Change the address prefix in ARP in order for the workstations to retrieve their new addresses.
B.Change the address prefix in a router in order for the router to advertise the new prefix with an ND.
C.Change the address prefix scope in a DHCP server in order for the workstations to retrieve their new addresses.
D.Change the workstations’ address prefix manually because an automated method does not exist.

A

Answer: B

14
Q

A network administrator connects two unmanaged switches together with a straight-through Ethernet cable. The administrator reviews the connection and notices that the uplinks are not on. Which of the following options offers the best solution for the issue?

A.A rollover cable needs to be used.
B.The switches needs to be rebooted after connecting.
C.The ports need to be enabled.
D.The ports need the IP address configured.
E.A crossover cable needs to be used.v

A

Answer: E

15
Q

An administrator wants to host services on the internet using an internal server. The server is configured with an RFC1918 address, and the administrator wants to make the services that are hosted on the server available on one of the company’s public IP addresses. Which of the following should the administrator configure to allow this access?

A.IPv6 tunneling
B.Virtual IP
C.Dual stack
D.EUI-64

A

Answer: B

15
Q

A network administrator is configuring DCHP and wants to explicitly set an IP address based on a MAC address. Which of the following should the administrator use?

A.Dynamic assignment
B.Static IP on the server
C.IP helper
D.Exclusion range
E.Reservation

A

Answer: E

15
Q

Which of the following routing protocols uses bandwidth and delay as the primary metrics to calculate the best path?

A.EIGRIP
B.RIP
C.OSPF
D.BGP

A

Answer: A

16
Q

A technician is troubleshooting a SQL database connection. After remotely connecting to the end client, the technician tests basic connectivity. Which of the following ports is available to connect via command-line interface?

A.143
B.445
C.993
D.1521

A

Answer: D

16
Q

A company is moving into a new office, and the network technician is setting up a new wireless solution. Which of the following is the first step the technician should take?

A.Perform a site survey.
B.Order equipment.
C.Create an SSID.
D.Create network diagrams.

A

Answer: A

16
Q

In a data center, data traffic that moves east-west is flowing between:

A.the top-of-rack and distribution switches.
B.the server and the cloud.
C.the top-of-rack and core switches.
D.top-of-rack switches.

A

Answer: D

17
Q

Which of the following can IoT devices most likely be connected to?

A.Router
B.Firewall
C.Proxy server
D.Access point

A

Answer: A

17
Q

Which of the following is associated with the session layer of the OSI model?

A.Data representation
B.Packets
C.Sockets
D.Frames

A

Answer: C

17
Q

A network administrator is troubleshooting an issue on a newly configured college campus network. A Linux workstation can connect to the internet, but it fails to connect to the campus intranet, which is located on another campus. Which of the following commands should the administrator run next to troubleshoot the connection?

A.ifconfig
B.traceroute
C.nmap
D.dig

A

Answer: B

17
Q

A company commissioned a site survey to check wireless network coverage. The technician noticed undesirable levels of RSSI in different areas of the office. Which of the following levels did the technician most likely notice?

A.-82dBm
B.-61dBm
C.42dBm
D.63dBm

A

Answer: A

18
Q

A network administrator is troubleshooting a network connectivity issue. The workstation can connect to the internet but not to internal network resources. Which of the following is most likely the cause of the issue?

A.APIPA address
B.Rogue DHCP server
C.Unreachable DNS server
D.Incorrect NAT settings

A

Answer: D

18
Q

A user is trying to map a network fileshare to a local drive and needs to open a firewall port for this traffic. Which of the following ports needs to be opened to accomplish this task?
A.389
B.445
C.514
D.636

A

Answer: B

18
Q

Outside traffic from local subnet is using an infernal web server. A technician must apply best practices to ensure outside users can only access the web server and not any other internal resources. Which of the following should the technician do to best addresses the issue?

A.Move the web server to a perimeter network.
B.Connect the web server to the WAN.
C.Connect the server directly to a second port on the cable modem.
D.Block incoming port 80 and port 443 traffic to the server.

A

Answer: A

18
Q

A new computer that was connected to the network reported an error of an Identical IP address with another computer. Both computers were configured for SLAAC. Which of the following is causing the error?

A.Rogue DHCP server
B.Duplicate MAC addresses
C.Incorrect router advertisement
D.Wrong VLAN assignment

A

Answer: B

18
Q

An engineer recently installed a new distribution switch and connected two servers provisioned with the following IPs: 192.168.17.20 and 192.168.17.30.

The servers cannot connect to the internet, but they can reach themselves. The engineer observes that the distribution switch has the following setup:

interface VLAN 100
IP address 192.168.17.5 255.255.255.0

The engineer is able to reach the core router 192.168.17.1 from the distribution switch. Which of the following is the most likely cause of this issue?
A.A routing loop has occurred.
B.The subnet mask is incorrect.
C.The servers are not configured with default gateway.
D.There is an improper Layer 1 connection between the router and the ISP modem.

A

Answer: C

19
Q

Which of the following is the best action to take before sending a network router to be recycled as electronic waste?
A.Turn on port security.
B.Shred the switch hard drive.
C.Back up and erase the configuration.
D.Remove the company asset ID tag.

A

Answer: C

19
Q

A technician is working on a solution to isolate traffic between specific types of devices, servers, and users on the internal firewall. Which of the following traffic flows should be isolated?
A.East-west
B.Access/edge
C.Core/distribution
D.North-south

A

Answer:A

19
Q

A network administrator is switching to IPv6 and wants to be able to use packet-tracing software on the network to monitor traffic. The administrator wants to set up the IP addressing to include the MAC address of each machine that is connected. Which of the following should the administrator implement? (Choose two.)

A.EUI-64
B.RFC1819
C.APIPA
D.DHCPv6
E.SLAAC
F.CIDR

A

Answer: AE

19
Q

Which of the following OSI layers is ICMP a part of?
A.Application
B.Session
C.Network
D.Transport

A

Answer: C

20
Q

A network consultant is working with a software-defined network and is troubleshooting an issue with an application’s instructions being properly translated for the network components. Which of the following is most likely at fault?

A.Infrastructure layer
B.Session layer
C.Control layer
D.Application layer

A

Answer: C

21
Q

Which of the following common agreements would a company most likely have an employee sign as a condition of employment?
A.NDA
B.ISP
C.SLA
D.MOU

A

Answer: A

21
Q

A user is experiencing network connectivity issues. Upon investigation, the engineer learns that the user installed a personal router and switch to use for multiple computers in the department. Which of the following has the user most likely introduced into the network?
A.Broadcast storms
B.Collisions
C.Rogue DHCP server
D.DNS poisoning

A

Answer: C

22
Q

A branch office is experiencing frequent power-related issues that are taking the network down dally. Which of the following would best address this network uptime issue?
A.MPLS
B.IPS
C.PDU
D.UPS
E.HA firewalls

A

Answer: D

23
Q

Users are connected to a switch on an Ethernet interface of a campus router. The service provider is connected to the serial 1 interface on the router. The output of the interfaces is:

E1/0: 192.168.8.1/24 -

S1: 192.168.7.252/30 -

After router and device configurations are applied, internet access is not possible. Which of the following is the most likely cause?
A.The Ethernet interface was configured with an incorrect IP address.
B.The router was configured with an incorrect loopback address.
C.The router was configured with an incorrect default gateway.
D.The serial interface was configured with the incorrect subnet mask.

A

Answer: D

24
Q

A network engineer is installing APs for a SOHO where every staff member uses a cordless phone. Which of the following standards would work best to reduce interference?
A.802.11a
B.802.11b
C.802.11g
D.802.1X

A

Answer: A

25
Q

The cybersecurity department needs to monitor historical IP network traffic on the WAN interface of the outside router without installing network sensors. Which of the following would be best to allow the department to complete this task?
A.Enabling NetFlow on the interface
B.Enabling SSH on the interface
C.Enabling SNMP on the interface
D.Enabling 802.1Q on the interface

A

Answer: A

Network+ (5 decks)

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