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WorksheetsNet+ 008 Domain 3-4
Total questions: 114
Worksheet time: 57mins
A help desk technician is troubleshooting a Windows server named SQL.local and wants to check which port a specific application is running on.
Which of the following commands should the technician run?
dig
traceroute
arp
netstat
A customer cannot reach a web application on a local server. The network consultant suspects that the server is not accepting the HTTPS connection. Which of the following commands should the consultant run on the server to determine what is occurring?
route
arp
nmap
netstat
A company wants to mitigate unauthorized physical connectivity after implementing a hybrid work schedule. Which of the following will the
company MOST likely configure?
Intrusion prevention system
DHCP snooping
ARP inspection
Port security
The Chief Executive Officer of a company wants to ensure business operations are not disrupted in the event of a disaster. The solution must have
fully redundant equipment, real-time synchronization, and zero data loss. Which of the following should be prepared?
Cloud site
Warm site
Hot site
Cold site
A user reports that a crucial fileshare is unreachable following a network upgrade that was completed the night before. A network technician
confirms the problem exists. Which of the following troubleshooting steps should the network technician perform NEXT?
Establish a theory of probable cause.
Implement a solution to fix the problem.
Create a plan of action to resolve the problem.
Document the problem and the solution.
A non-employee was able to enter a server room. Which of the following could have prevented this from happening?
A security camera
A biometric reader
OTP key fob
Employee training
A network administrator is investigating reports about network performance and finds high utilization on a switch uplink. The administrator is unsure whether this is an anomaly or normal behavior that will require an upgrade to resolve. Which of the following should the administrator reference to gain historical perspective?
Device configuration review
ARP table export
Service-level agreement
Network performance baseline
An organization would like to implement a disaster recovery strategy that does not require a facility agreement or idle hardware. Which of the following strategies MOST likely meets the organization’s requirements?
Cloud site
Cold site
Warm site
Hot site
Which of the following would be increased by adding encryption to data communication across the network?
Availability
Integrity
Accountability
Confidentiality
An engineer is designing a network topology for a company that maintains a large on-premises private cloud. A design requirement mandates internet-facing hosts to be partitioned off from the internal LAN and internal server IP ranges. Which of the following defense strategies helps
meet this requirement?
Implementing a screened subnet
Deploying a honeypot
Utilizing network access control
Enforcing a Zero Trust model
A technician uses a badge to enter a security checkpoint on a corporate campus. An unknown individual quickly walks in behind the technician without speaking. Which of the following types of attacks did the technician experience?
Tailgating
Evil twin
On-path
Piggybacking
Which of the following is the MOST effective security control to keep a company’s physical perimeter protected against intrusions leveraged by social-engineering techniques?
Employee training
Biometric lockers
Access control vestibule
Motion detection
A PC and a network connectivity, and a help desk technician is attempting to resolve the issue. The technician plans to run a constant ping command from a Windows workstation while testing various possible reasons for the connectivity issue.
Which of the following should the technician use?
ping -w
ping -i
ping -s
ping -t
Which of the following has the capability to centrally manage configuration, logging, and firmware versioning for distributed devices?
WLAN controller
Load balancer
SIEM solution
Syslog server
An IT technician is working on a support ticket regarding an unreachable website. The technician has utilized the ping command to the website, but the site is still unreachable. Which of the following tools should the technician use NEXT?
ipconfig
tracert
arp
netstat
A customer calls the help desk to report that a Windows PC is unable to open any websites or access any server shares. The help desk technician suspects there is an issue with the configuration. Which of the following commands should the technician issue FIRST to troubleshoot the issue?
tracert
netstat
arp
ipconfig
nmap
A user from a remote office is reporting slow file transfers. Which of the following tools will an engineer MOST likely use to get detailed measurement data?
Packet capture
iPerf
SIEM log review
Internet speed test
Which of the following describes the ability of a corporate IT department to expand its cloud-hosted VM environment with minimal effort?
Scalability
Load balancing
Multitenancy
Geo-redundancy
A network administrator is concerned about a rainbow table being used to help access network resources. Which of the following must be addressed to reduce the likelihood of a rainbow table being effective?
Password policy
Remote access policy
Acceptable use policy
Data loss prevention policy
An engineer recently decided to upgrade the firmware on a router. During the upgrade, the help desk received calls about a network outage, and a critical ticket was opened. The network manager would like to create a policy to prevent this from happening in the future.
Which of the following documents should the manager create?
Change management
Incident response
Standard operating procedure
System life cycle
DNS port #
25
53
22
67 & 68
SSH port #
21
23
465
22
Kerberos port #
993
22
88
20
SMTP
25
20
53
161
SFTP port #
68
25
67
22
FTP Port #'s
20
23
22
21
TFTP Port #
20
25
24
69
DHCP port #'s
5060, 5061
161,0163
67, 68
45, 445
HTTP port #
443
82
65
80
NTP port #
110
161
123
443
LDAP port #
465
3389
1720
389
HTTPS port #
443
445
191
88
SNMP port #'s
143
161
636
162
RDP port #
389
3380
3993
3389
SIP port #'s
5060, 5061
389, 3389
1024, 1028
333, 334
SMB port #
422
465
445
587
POP(3) port #
111
135
143
110
IMAP port #
389
445
143
443
H.323 port #
5060
1143
1720
1465
Which protocol is used for email communication?
SMTP
TCP
FTP
HTTP
Which network topology connects all devices in a linear sequence?
Bus topology
Star topology
Ring topology
Mesh topology
Which network device operates at the Data Link layer of the OSI model?
router
hub
firewall
switch
Which security measure prevents unauthorized access to a network?
firewall
encryption
password protection
antivirus software
Which wireless networking standard operates in the 2.4 GHz frequency band?
Wi-Fi 4 (802.11n)
Wi-Fi 6 (802.11ax)
Bluetooth
Wi-Fi 5 (802.11ac)
Which protocol is used to resolve IP addresses to domain names?
DNS
SMTP
FTP
HTTP
Which network topology connects all devices to a central device?
star topology
mesh topology
ring topology
bus topology
Which network device operates at the Network layer of the OSI model?
firewall
hub
router
switch
Which security measure encrypts data transmitted over a network?
IPsec
OSPF
RIP
TCP/IP
Which wireless networking standard operates in the 5 GHz frequency band?
802.11n
802.11g
802.11a
802.11b
Which protocol is used for transferring files over a network?
SMTP
FTP
HTTP
SSH
Which network topology connects devices in a circular manner?
Bus topology
Ring topology
Star topology
Mesh topology
Which network device operates at the Physical layer of the OSI model?
router
switch
hub
firewall
Which security measure monitors and controls incoming and outgoing network traffic?
password protection
encryption
antivirus
firewall
Which wireless networking standard operates in both the 2.4 GHz and 5 GHz frequency bands?
Wi-Fi 5 (802.11ac)
Bluetooth 5.0
Wi-Fi 6 (802.11ax)
Wi-Fi 4 (802.11n)
A technician is troubleshooting a wireless connectivity issue in a small office located in a high-rise building. Several APs are mounted in this office. The users report that the network connections frequently disconnect and reconnect throughout the day. Which of the following is the MOST likely cause of this issue?
The AP association time is set too low
EIRP needs to be boosted
Channel overlap is occurring
The RSSI is misreported
A network engineer configured new firewalls with the correct configuration to be deployed to each remote branch. Unneeded services were disabled, and all firewall rules were applied successfully. Which of the following should the network engineer perform NEXT to ensure all the firewalls are hardened successfully?
Ensure an implicit permit rule is enabled
Configure the log settings on the firewalls to the central syslog server
Update the firewalls with current firmware and software
Use the same complex passwords on all firewalls
At which of the following OSI model layers would a technician find an IP header?
Layer 1
Layer 2
Layer 3
Layer 4
An engineer is configuring redundant network links between switches. Which of the following should the engineer enable to prevent network stability issues?
802.1Q
STP
Flow control
CSMA/CD
Several WIFI users are reporting the inability to connect to the network. WLAN users on the guest network are able to access all network resources without any performance issues. The following table summarizes the findings after a site survey of the area in question:
Which of the following should a wireless technician do NEXT to troubleshoot this issue?
Reconfigure the channels to reduce overlap
Replace the omni antennas with directional antennas
Update the SSIDs on all the APs
Decrease power in AP 3 and AP 4
Which of the following routing protocols is used to exchange route information between public autonomous systems?
OSPF
BGP
EIGRP
RIP
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
Tone generator
Fusion splicer
Cable tester
Which of the following can be used to centrally manage credentials for various types of administrative privileges on configured network devices?
SSO
TACACS+
Zero Trust
Multifactor authentication
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
SSH
FTP
DNS
Branch users are experiencing issues with videoconferencing. Which of the following will the company MOST likely configure to improve performance for these applications?
Dynamic routing
Quality of service
Network load balancer
Static IP addresses
A technician is assisting a user who cannot connect to a network resource. The technician first checks for a link light. According to troubleshooting methodology, this is an example of:
using a bottom-to-top approach.
establishing a plan of action.
documenting a finding
questioning the obvious.
Which of the following transceiver types can support up to 40Gbps?
SFP+
QSFP+
QSFP
SFP
Which of the following TCP ports is used by the Windows OS for file sharing?
53
389
445
1433
A network administrator redesigned the positioning of the APs to create adjacent areas of wireless coverage. After project validation, some users still report poor connectivity when their devices maintain an association to a distanced AP. Which of the following should the network administrator check FIRST?
Validate the roaming settings on the APs and WLAN clients
Verify that the AP antenna type is correct for the new layout
Check to see if MU-MIMO was properly activated on the APs
Deactivate the 2.4GHz band on the APS
Which of the following connector types would have the MOST flexibility?
SFP
BNC
LC
RJ45
What does Local Area Network(LAN) mean?
A public high-speed network that can transmit voice and data within a limited geographical area.
An interconnected group of computers/peripherals located within a limited area.
A network system.
Dispenses jobs sent to a network printer.
Which of the following CANNOT be a reason for network problems?
Incorrect network problems
Unplugged network hub,switch
Network cables are connected
Network disabled
What is 'latency'?
Stores files and supplies the files to workstations on request of the user.
The elapsed time it takes for a packet of data to arrive and leave its destination.
The elapsed time it takes for a packet of data to arrive at its destination.
Allows wireless devices to connect to a wired network.
What does communication protocol refer to?
The set of rules for corruption of data from one network to another.
The ping count.
The set of rules for transmission of data from one network to another.
The capacity of a network.
What're two commonly used addresses for data transmission?
Home address and IP Address
Town of Birth and Mac Address
Indestructible Phoenix Address and Home Address
IP Address and Mac Address
What is a 'packet'?
What UPS delivers to your mailbox.
What your teacher gives during class.
A collection of routers in a set area.
A collection of information sent online.
You need a topology that is scalable to use in your network. Which of the following will you install?
Bus
Ring
Star
Mesh
All of these
What are the characteristic traits of single-mode fiber optics?
Transmission distances of up to 2 km
More expensive than multimode fiber optics
Less expensive than multimode fiber optics
Transmission distances of up to 100 km
Uses laser as the source of light
What are the characteristic features of the RJ-45 connector?
Used with telephone cabling
Coaxial cabling connector
Used with Ethernet network cabling
Copper cabling connector`
Fiber-Optic cabling connector
Which of the following refers to the minimum requirement for twisted-pair copper cabling in modern Ethernet networks
cat 3
cat 5
cat 5e
cat 6
cat 9
Why would a network admin use plenum-rated cable during an installation?
low combustion temperature
high combustion temperature
reduces toxic gas released during a fire
is not susceptible to any interference
What is layer 2 in the OSI model
Transport
Network
Session
Physical
Data Link
What is the main difference between single-mode fiber (SMF) and multimode fiber (MMF)?
Electrical signals
Number of light rays
Number of digital signals
That signal-mode can be run a shorter distance
Why are wires in twisted pair cables?
To reduce crosstalk or electromagnetic induction between pairs of wires
Not To reduce crosstalk or electromagnetic induction between pairs of wires
Because they cost less
Which of the following methods would you use to create a crossover cable
Use the T568A standard on one connector and the t568b standard on the other connector
Use the t568B standard
Use the BLOG Convention
What is crosstalk?
An unwanted transfer of signals between communication channels
An area that connects multiple floors where cables can be run. This area cannot be a plenum space.
Plastic used to shield objects such as coaxial cable
What is the disadvantage of using fiber optic cabling?
Difficult to work with
Hard to find
Neither of these
Which type of optical fiber is normally used to connect two buildings that are several kilometers apart?
Multi-mode
Fibre Channel mode
Single-mode
Which of the following cables can be used to directly connect two PCs?
Crossover Cable
Straight-Through Cable
Rollover Cable
Which type of connector is mostly used these days for connectivity with a network card?
RJ-33
RJ-11
RJ-45
BNC
Which cables use RJ-45 connectors?
Shielded Twisted Pair Cable
Thin Coaxial Cable
Thick Coaxial Cable
Unshielded Twisted Pair Cable
How many twisted pairs does UTP cable have?
2
8
4
6
__________ cable transfers data by light impulses
produced by an LED or a Laser
Thinnet Cable
Coaxial Cable
CAT 6E Cable
Fiber Optic Cable
Fiber-optic cable uses _____ instead of electrical energy to transmit data.
radio waves
microwaves
light pulses
satellite transmissions
