CompTIA Network+ Exam Walkthrough

Which of the following are UDP header fields?

Which of the following are characteristics of TCP protocol?

Which of the following statements provide Layer 5 protocols?

You need to increase the uplink capacity between two switches, where the uplink is dropping packets due to the high utilization. Which solution can be used to increase the uplink capacity?

You have some issue with a specific server and needs to analyze the traffic to identify what is causing the issue. What should you do in order to troubleshoot without any disruption?

You are the network administrator of a small company and you're also responsible by network security.
You need to make sure just employees are using the corporate network to protect your company data. Which security feature should you use?

Regarding Spanning-tree protocol (STP), which of the following statements are true?

You have the following scenario, where you need to define the subnets to be used in a new office.
The 192.168.123.0/24 prefix is available for this office and the transit VLAN was already configured during the initial setup.
Select the statement where the subnets were defined to fit the requirements as per the picture below.

You have defined the subnet 192.168.123.32/27 as the prefix to be used for VOICE devices. Which subnet mask you need to use on the L3 interface configuration?

Which of the following are private subnets, as per RFC1918 definition?

Considering the following physical LAN topology, which statements below provides its name and characteristics.

Which of the following statements are considered logical topologies?

You need to setup the wireless network for the company. You already bought the Wireless Controller and the access points for it.
Which type of wireless implementation you should use?

You want to connect your bluetooth headset to your phone to listen some music. Which type of network you will need to use?

Which statements are requirements to choose the number of APs needed for a new implementation and the best AP placement?

You are analyzing your client´s wireless network. Based on the following information, what can you describe about the network?
SSID: MyCorpSSID
Auth: WPA2-PSK
PSK: MyCorp123

Which of the following Cloud Connectivity technology has the lower cost and can be used through standard internet links to connect local resources to the Cloud environment?

In order to provide dynamic IP address to the hosts on DATA, VOICE and WIRELESS subnets, you are setting up a DHCP server on the switch.
Which of the following options should you configure in the DHCP scope to be able to access the Internet and internal company servers?

Which of the following are twisted pair cable connectors?

You are designing the architecture of a Datacenter and must define the UTP cable category to be purchased to connect the servers to the switch via 10GBaseT UTP ports. Which of the following should you use?

You connect two switches using an UTP cable and the port didn´t come up. You already checked and both switch ports are not disabled. What can be the issue?

You have configured new VLANs for your office and the users which were migrated to this VLAN are complaining about the internet access, which is not working.
Your field analyst did the first analysis and the websites are being resolved by DNS server but the users are not able to connect to it. Internal resources, like printers and corporate servers, are working fine. Other users VLANs are connecting to internet with no issues.
Where can be the issue?

You need to extend the coverage of a corporate wireless network and there is no cabling where you need to provide wireless. Which device can be used?

You are setting up a new network, where you already configured the L3 switch and the router.
All the clients are using the internet access with no issues, but they are exposed since there is no filter on it.
What you should use to restrict the web access filtering undesired websites and contents, and log all client activities?

Due to the pandemia, all employees of a company must work from home and you need to provide network connectivity for them. Which device do you need to provide this connectivity?

Which software abstracts guest machines and the operating system they run on?

Which of the following hypervisor can be considered as hosted hypervisor (or type-2)?

You need to allocate each virtual server to the proper VLAN on the same hypervisor. Which can be used to accomplish this?

Which of the following technologies provides broadband internet connectivity through a traditional telephony structure using a modem?

Which technology encapsulates PPP frames within Ethernet frames to provide internet service?

You were requested to reduce the cost of wan link connectivity between the remote locations, head quarters and datacenters.
The current solution is MPLS.
Which solution could you use to generate the requested saving?

Refer to the exhibit.

Which type of document this picture represents?

Refer to the exhibit.

Which type of document this picture represents?

Which of the following document is important to reduce impact of a downtime or network issues after the maintenance window?

Which of the following document outlines how a business will continue operating during an unplanned disruption in service?

Which of the following can be considered in a Business Continuity Plan document?

What can be considered in a Business continuity plan to provide a redundant connectivity to physical servers?

Which of the following can be used in the Business Continuity Plan in order to reduce the power outage risk?

Which tools can be used to periodically test the network to verify that network security components are behaving as expected and to detect known vulnerabilities?

Which is the best definition of patching process?

The infrastructure team wants to access their Windows Servers from home, to be able to support after business hours.
Which solution should be used to provide remote access to these servers?

Your company needs to open a new office for a few number of employees (about 10). Which is the best solution to connect this new office to your DC?

Which solution provides access to network devices either when the network is down, being able to connect to the devices remotely?

Which document is part of corporate security policy, makes employees aware of their obligations and must be signed by them during their onboarding?

In the last years the number of remote workers increase a lot and with number of remote employees the risk of loss of data or the exfiltration increases also.
Which solution can help company´s data from loss and exfiltration?

Which of the following are examples of End-User Policies?

Which of the following are detection physical security devices?

Which of the following is a physical security device which provides authentication that is tied specifically to you as an individual?

Which of the following centralized authentication provides is an open standard and all-vendor supported?

Which of the following solution must be used in conjunction with SSL VPN to improve the security level of authentication?

Which solution can be used to improve wired network access security, asking users to login to allow to access the network before provide connectivity to their PC?

You need to configure a new SSID for employees where the security level will be the best as possible, to keep the network secure.
The authentication method must use AES as encryption method.
Which authentication must you use in this new SSID?

Which EAP method uses certificate to stablish the connection and is considered the most secure EAP method?

Which malware denies a user access to their files by encrypting the files and then displaying a message demanding a compensation for the decryption key?

Which attack attempts to manipulate individuals into performing actions or divulging confidential information?

Which action can be done to protect the company from social engineering attacks?

You need to install a new device in the network and must make sure all security best practices are being applied. Which of the following are good practices for network device hardening?

You are hardening the network devices and need to choose which protocol should be used for remote access to the devices. Select the most secure protocol to be used for CLI access to the network devices.

Which mitigation technique avoid an attacker from getting information about DTP, CDP and VTP protocols plugging some PC to an unconfigured switch port?

You need to configure a new server to publish WWW service to the internet, configuring the proper ACL and NAT. What must be taken into consideration on the design of this solution?

Which of the following is a mitigation technique used to attract cybercriminals to a server where there is a fake application, protecting the real systems from those attackers?

Which switch configuration can secure the network from DHCP spoofing?

Some users are claiming about network issues and you need to identify what can be the issue. Which techniques can be used to identify it?

Regarding network troubleshooting, there are some traditional CLI tools which are used by all network experts as the first resource when troubleshooting some issue.
Which are they?

Users are claim about the network when doing a meeting in a specific meeting room. You notice that all the users connect to the meeting via wireless connection.
What tool can you use to identify what should be the issue in this case?

You are troubleshooting a specific application issue where the users lose the connection when they are working into it.
You already checked the reachability from layer 1 to 4, where you already did a telnet in the application port and the connection is closing as expected.
Which tool can be used to proceed with the troubleshooting?

Refer to the exhibit.

The host is unable to access internet. Select the correct statement about this issue and the first step to identify it.

The network field analyst just install a new switch and you didn´t see the neighbor switch via LLDP.
You checked the interface and it seems the port is down.
The transceiver is being identified and it seems to be ok.
What can be done as the first step to troubleshoot this issue?

An user is complaining about the network performance.
The following output is from the port connected to the user´s PC.

What can be the issue in this case?

You are troubleshooting a wireless issue where the network becomes unstable in a small office during the lunch time.
During you visit for troubleshooting, you notice that the employees usually have lunch at the office and the microwaves is used to heat the food.
Which issue you think they have on the wireless network?

You are troubleshooting a wireless issue where some clients usually lost the connectivity to the wireless network.
Analyzing all the cases in detail you figure out that there is no specific area where the issue is happening, but all users which have issues are using the same laptop model.
What should you do to troubleshoot this issue?

Refer to the exhibit.

Which statement best describes the best way to start the troubleshooting and which tools should be used in the process?

Refer to the exhibit.

Users are complaining that they cannot access the internet.
The network field analyst did an initial check and the hosts can ping either the gateway and the public IP 8.8.8.8.
What can be the issue?

Refer to the exhibit.

Users are complaining that they cannot access the internet.
The network field analyst did an initial check and the hosts can ping either the gateway and the public IP 8.8.8.8.
You checked if the the host can ping www.google.com and it is responding.
You tried to telnet the 443 and 80 port for www.google.com and none of them connect.
What can be the issue now?

You have being asked to check some weird behavior in the network.
Users are getting IPs from subnet 10.0.0.0/24 where the corporate network configured and where there is a DHCP server is 192.168.10.0/24.
What can be the issue?

You need to segment the network in different broadast domains, to avoid a great number of broadcast in the network.
Which network device should be used?

Which device should be used to implement DMVPN in a Cloud environement?