Network+ (exam bible)
Which of the following is the physical topology for an Ethernet LAN? - ✔✔Star
A fiber link connecting two campus networks is broken. Which of the following tools should an
engineer use to detect the exact break point of the fiber link? - ✔✔OTDR (Optical Time Domain
%
Reflectometer)
Which of the following can be used to centrally manage credentials for various types of administrative
privileges on configured network devices? - ✔✔TACACS+ (Terminal Access Controller
Access-Control System - remote authentication protocol)
0
Branch user are experiencing issues with video conferencing. Which of the following will the company
MOST likely configure to improve performance for these applications? - ✔✔Quality of service
A company built a new building at its headquarters location. The new building is connected to the
company's LAN via fiber-optic cable. Multiple users in the new building are unable to access the
0
intranet site via their web browser, but they are able to access internet sites. Which of the following
describes how the network administrator can resolve this issue? - ✔✔Correct the DNS server entries
in the DHCP scope
1
A network is experiencing a number of CRC errors during normal network communication. At which of
the following layers of the OSI model will the administrator MOST likely start to troubleshoot -
✔✔Layer 2 - Data
An engineer notices some late collisions on a half-duplex link. The engineer verifies that the devices
on both ends of the connection are configured for half duplex. Which of the following is the MOST
likely cause of this issue? - ✔✔One of the devices has a hardware issue
A technician is installing multiple UPS units in a major retail store. The technician is required to keep
track of all changes to new and old equipment. Which of the following will allow the technician to
record these changes? - ✔✔Asset tags
A network engineer is investigating reports of poor performance. Upon reviewing a device
configuration, the engineer finds that duplex settings are mismatched on both ends. Which of the
following would be the MOST likely result of this finding? - ✔✔Increased CRC errors
Which of the following service models would MOST likely be used to replace on-premises servers
with a cloud solution? - ✔✔IaaS
,A website administrator is concerned the company's static website could be defaced by hacktivists or
used as a pivot point to attack internal systems. Which of the following should a network administrator
recommend to assist with detecting these activities? - ✔✔Use SSL encryption
Which of the following connector types would have the MOST flexibility? - ✔✔SFP
%
A technician is writing documentation regarding a company's server farm. The technician needs to
confirm the server name for all Linux servers. Which of the following commands should the technician
run? - ✔✔nslookup
Wireless users are reporting intermittent internet connectivity. Connectivity is restored when the users
disconnect and reconnect, utilizing the web authentication process each time. The network
0
administrator can see the devices connected to the APs at all times. Which of the following steps will
MOST likely determine the cause of the issue? - ✔✔Verify the session time-out configuration on the
captive portal settings
An attacker is attempting to find the password to a network by inputting common words and phrases
0
in plaintext to the password prompt. Which of the following attack types BEST describes this action? -
✔✔Dictionary attack
A technician receives feedback that some users are experiencing high amounts of jitter while using
1
the wireless network. While troubleshooting the network, the technician uses the ping command with
the IP address of the default gateway and verifies large variations in latency. The technician thinks
the issue may be interference from other networks and non-802.11 devices. Which of the following
tools should the technician use to troubleshoot the issue? - ✔✔Spectrum analyzer
A network technician is installing new software on a Windows-based server in a different
geographical location. Which of the following would be BEST for the technician to use to perform this
task? - ✔✔RDP
Access to a datacenter should be individually recorded by a card reader even when multiple
employees enter the facility at the same time. Which of the following allows the enforcement of this
policy? - ✔✔Access control vestibules
Which of the following routing protocols is used to exchange route information between public
autonomous systems? - ✔✔BGP
The management team needs to ensure unnecessary modifications to the corporate network are not
permitted and version control is maintained. Which of the following documents would BEST support
this? - ✔✔A change management policy
, Which of the following factors should be considered when evaluating a firewall to protect a
datacenter's east-west traffic? - ✔✔Traffic between VMs running on different hosts
A network engineer performs the following tasks to increase bandwidth:
Connects two network cables from the server to a switch stack
%
Configure LACP on switchports
Verifies the correct configurations on the switch interfaces
Which of the following needs to be configured on the server? - ✔✔NIC teaming (LACP/load
balancing)
A client recently added 100 users who are using VMs. All users have since reported slow or
0
unresponsive desktops. Reports show minimal network congestion, zero packet loss, and acceptable
packet delay. Which of the following metrics will MOST accurately show the underlying performance
issues? - ✔✔CPU usage and Memory
A technician is searching for a device that is connected to the network and has the device's physical
0
network address. Which of the following should the technician review on the switch to locate the
device's network port? - ✔✔MAC table (physical is MAC)
Which of the following would be BEST to use to detect a MAC spoofing attack? - ✔✔Reverse
1
Address Resolution Protocol (RARP)
There are two managed legacy switches running that cannot be replaced or upgraded. These
switches do not support cryptographic functions, but they are password protected. Which of the
following should a network administrator configure to BEST prevent unauthorized access? -
✔✔Enable a management access list
A small, family run business uses a single SOHO router to provide internet and wifi to its employees.
At the start of the new week, employees come in and find their usual wifi network is no longer
available, and there is a new wireless network to which they cannot connect. Given that information,
which of the following should have been done to avoid this situation? - ✔✔The device firmware
should have been kept current
Which of the following protocol types describes secure communication on port 443? - ✔✔TCP
Which of the following protocols will a security appliance that is correlating network events from
multiple devices MOST likely rely on to receive event messages? - ✔✔Syslog
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