A network engineer needs to reduce the overhead of file transfers. Which of the following configuration changes would accomplish that goal?

A. Link aggregation

B. Jumbo frames

C. Port security

D. Flow control

E. Lower FTP port

A company's web server is hosted at a local ISP. This is an example of:

A. colocation.

B. an on-premises data center.

C. a branch office.

D. a cloud provider.

An administrator is writing a script to periodically log the IPv6 and MAC addresses of all the devices on a network segment. Which of the following switch features will MOST likely be used to assist with this task?

A. Spanning Tree Protocol

B. Neighbor Discovery Protocol

C. Link Aggregation Control Protocol

D. Address Resolution Protocol

A technician is running new Cat 5e cables to a server room. Which of the following tools should the technician use to terminate the cables at the patch panel?

A. Multimeter

B. Cable crimper

C. Toner probe

D. Punchdown tool

Which of the following BEST describes a North-South traffic flow?

A. A public Internet user accessing a published web server

B. A database server communicating with another clustered database server

C. A Layer 3 switch advertising routes to a router

D. A management application connecting to managed devices

Which of the following routing protocols is BEST suited for use on a perimeter router?

A. OSPF

B. RIPv2

C. EIGRP

D. BGP

A network client is trying to connect to the wrong TCP port. Which of the following responses would the client MOST likely receive?

A. first

B. FIN

C. ICMP Time Exceeded

D. Redirect

Which of the following describes when an active exploit is used to gain access to a network?

A. Penetration testing

B. Vulnerability testing

C. Risk assessment

D. Posture assessment

E. Baseline testing

A network administrator installed a new data and VoIP network. Users are now experiencing poor call quality when making calls. Which of the following should the administrator do to increase VoIP performance?

A. configure a voice VLAN.

B. configure LACP on all VoIP phones.

C. configure PoE on the network.

D. configure jumbo frames on the network.

Which of the following is an example of on-demand scalable hardware that is typically housed in the vendor's data center?

A. DaaS

B. IaaS

C. PaaS

D. SaaS

A network engineer designed and implemented a new office space with the following characteristics:

One month after the office space was implemented, users began reporting dropped signals when entering another room and overall poor connections to the 5GHz network. Which of the following should the engineer do to best resolve the issue?

A. Use non-overlapping channels.

B. Reconfigure the network to support 2.4GHz

C. Upgrade to WPA3.

D. Change to directional antennas.

A help desk technician discovers the following note while reviewing tickets in a customer's account:
Was able to confirm customer's problem with the system. Will upgrade system to latest version and monitor for further connectivity problems per developer's instructions.
Which of the following describes what the technician was documenting with this note?

A. The technician was approaching multiple problems individually.

B. The technician was establishing a plan of action and identifying potential effects.

C. The technician was testing a theory to determine the cause.

D. The technician was identifying the problem by gathering information.

Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?

A. Site-to-site VPN

B. SSH tunnel

C. API gateway

D. Dedicated line

A network administrator corrected a rule on a misconfigured firewall. Which of the following should the administrator do NEXT when applying the network troubleshooting methodology?

A. Verify full system functionality.

B. Document actions and lessons learned.

C. Establish a theory of probable cause.

D. Identify potential effects.

A technician is troubleshooting a connectivity issue with an end user. The end user can access local network shares and intranet pages but is unable to access the internet or remote resources. Which of the following needs to be reconfigured?

A. The IP address

B. The subnet mask

C. The gateway address

D. The DNS servers

Which of the following describes traffic going in and out of a data center from the internet?

A. Demarcation point

B. North-South

C. Fibre Channel

D. Spine and leaf

While walking from the parking lot to an access-controlled door, an employee sees an authorized user open the door. Then the employee notices that another person catches the door before it closes and goes inside. Which of the following attacks is taking place?

A. Tailgating

B. Piggybacking

C. Shoulder sur ng

D. Phishing

Which of the following redundant devices creates broadcast storms when connected together on a high-availability network?

A. Switches

B. Routers

C. Access points

D. Servers

Which of the following technologies would MOST likely be used to prevent the loss of connection between a virtual server and network storage devices?

A. Multipathing

B. VRRP

C. Port aggregation

D. NIC teaming

A network administrator is creating a subnet for a remote office that has 53 network devices. An additional requirement is to use the most efficient subnet. Which of the following CIDR notations indicates the appropriate number of IP addresses with the LEAST amount of unused addresses?

A. /24

B. /26

C. /28

D. /32

Which of the following situations would require an engineer to configure subinterfaces?

A. In a router-on-a-stick deployment with multiple VLANs

B. In order to enable inter-VLAN routing on a multilayer switch

C. When configuring VLAN trunk links between switches

D. After connecting a router that does not support 802.1Q VLAN tags

A help desk supervisor discovers the following ticket excerpt while reviewing notes in a customer's account:
Received report that customer was unable to use the scanner to read barcodes, the internet no longer worked, and the monitor was fuzzy. Arrived on site and began troubleshooting.
confirmed monitor issue. Replaced VGA cable.
confirmed scanner failure. Scanner USB cable was unattached. Reattached cable.
confirmed internet issue. Duplicated on test laptop. Escalated to ISP.
Which of the following BEST describes what the technician was doing?

A. The technician was questioning the obvious.

B. The technician was implementing preventative measures.

C. The technician was approaching multiple problems individually.

D. The technician was determining if anything had changed.

A technician needs to change an incoming fiber line into an RJ45 copper connection for uplinking a new switch. Which of the following would BEST satisfy this requirement?

A. Media converter

B. F-type connector

C. Small form-factor pluggable

D. Punchdown block

A network engineer receives the following when connecting to a switch to configure a port: telnet 10.1.200.1 Connecting to 10.1.200.1..Could not open connection to the host, on port 23: Connect failed.
Which of the following is the MOST likely cause for the failure?

A. The network engineer is using the wrong protocol.

B. The network engineer does not have permission to configure the device.

C. SNMP has been secured with an ACL.

D. The switchport the engineer is trying to configure is down.

A network deployment engineer is deploying a new single-channel 10G optical connection. Which of the following optics should the engineer MOST likely use to satisfy this requirement?

A. QSFP

B. QSFP+

C. SFP

D. SFP+

Which of the following routing protocols has routes that are classi ed with an administrative distance of 110?

A. BGP

B. OSPF

C. EIGRP

D. RIP

Which of the following describes the BEST device to configure as a DHCP relay?

A. Bridge

B. Router

C. Layer 2 switch

D. Hub

A network technician at a university is assisting with the planning of a simultaneous software deployment to multiple computers in one classroom in a building.
Which of the following would be BEST to use?

A. Multicast

B. Anycast

C. Unicast

D. Broadcast

A fiber patch cable, which was being stored in an unsecure telecommunications closet with janitorial supplies, was damaged and caused an outage. A network technician replaced the broken cable with a new cable from a sealed bag. However, this solution did not resolve the outage.
Which of the following is the MOST likely explanation?

A. Incorrect pinout

B. Incorrect transceivers

C. Reversed transmit and receive

D. Dirty optical cables

Due to concerns around single points of failure, a company decided to add an additional WAN to the network. The company added a second MPLS vendor to the current MPLS WAN and deployed an additional WAN router at each site. Both MPLS providers use OSPF on the WAN network, and EIGRP is run internally. The first site to go live with the new WAN is successful, but when the second site is activated significant network issues occur. Which of the following is the MOST likely cause for the WAN instability?

A. A CDP neighbor has changed

B. Asymmetrical routing

C. A switching loop

D. An incorrect IP address

A network technician is reviewing the interface counters on a router interface. The technician is attempting to confirm a cable issue. Given the following information:

Which of the following metrics confirms there is a cabling issue?

A. Last cleared

B. Number of packets output

C. CRCs

D. Giants

E. Multicasts

A network is experiencing extreme latency when accessing a particular website. Which of the following commands will BEST help identify the issue?

A. ipconfig

B. netstat

C. tracert

D. ping

Which of the following ports is a secure protocol?

A. 20

B. 23

C. 443

D. 445

A network engineer configured new rewalls 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 rewalls are hardened successfully?

A. Ensure an implicit permit rule is enabled

B. configure the log settings on the rewalls to the central syslog server

C. Update the rewalls with current firmware and software

D. Use the same complex passwords on all rewalls

After rebooting an AP, a user is no longer able to connect to the enterprise LAN. A technician plugs a laptop in to the same network jack and receives the IP 169.254.0.200. Which of the following is MOST likely causing the issue?

A. DHCP scope exhaustion

B. Signal attenuation

C. Channel overlap

D. Improper DNS configuration

A network administrator creates a new network, 10.10.0.0/24, on a DHCP server. The administrator wants to ensure that 10.10.0.10-10.10.0.15 are not allocated to other devices. Which of the following features should the administrator configure?

A. Exclusion

B. Reservation

C. Scope

D. Relay

Which of the following provides redundancy on a file server to ensure the server is still connected to a LAN even in the event of a port failure on a switch?

A. NIC teaming

B. Load balancer

C. RAID array

D. PDUs

To comply with an industry regulation, all communication destined to a secure server should be logged and archived on a storage device. Which of the following can be configured to fulfill this requirement?

A. QoS traffic classification

B. Port mirroring

C. Flow control

D. Link Aggregation Control Protocol

Users attending security training at work are advised not to use single words as passwords for corporate applications. Which of the following does this BEST protect against?

A. An on-path attack

B. A brute-force attack

C. A dictionary attack

D. MAC spoofing

E. Denial of service

A company is reviewing ways to cut the overall cost of its IT budget. A network technician suggests removing various computer programs from the IT budget and only providing these programs on an as-needed basis. Which of the following models would meet this requirement?

A. Multitenancy

B. IaaS

C. SaaS

D. VPN

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 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?

A. Verify the session time-out configuration on the captive portal settings

B. Check for encryption protocol mismatch on the client’s wireless settings

C. confirm that a valid passphrase is being used during the web authentication

D. Investigate for a client’s disassociation caused by an evil twin AP

Which of the following is the physical topology for an Ethernet LAN?

A. Bus

B. Ring

C. Mesh

D. Star

An engineer needs to verify the external record for SMTP traffic. The engineer logged in to the server and entered the nslookup command. Which of the following commands should the engineer send before entering the DNS name?

A. set type=A

B. ls -d company.mail.com

C. set domain=company.mail.com

D. set querytype=MX

A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds hundreds of CRC errors on an interface.
Which of the following is the MOST likely cause of these errors?

A. A bad wire on the Cat 5e cable

B. The wrong VLAN assignment to the switchport

C. A misconfigured QoS setting on the router

D. Both sides of the switch trunk set to full duplex

At which of the following OSI model layers does an IMAP client run?

A. Layer 2

B. Layer 4

C. Layer 6

D. Layer 7

An IT administrator received an assignment with the following objectives:
Conduct a total scan within the company's network for all connected hosts.
Detect all the types of operating systems running on all devices.
Discover all services offered by hosts on the network.
Find open ports and detect security risks.
Which of the following command-line tools can be used to achieve these objectives?

A. nmap

B. arp

C. netstat

D. tcpdump

A network engineer needs to create a subnet that has the capacity for five VLANs, with the following number of clients to be allowed on each:

Which of the following is the SMALLEST subnet capable of this setup that also has the capacity to double the number of clients in the future?

A. 10.0.0.0/21

B. 10.0.0.0/22

C. 10.0.0.0/23

D. 10.0.0.0/24

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?

A. Tailgating

B. Evil twin

C. On-path

D. Piggybacking

Which of the following topologies requires the MOST connections when designing a network?

A. Mesh

B. Star

C. Bus

D. Ring

After upgrading to a SOHO router that supports Wi-Fi 6, the user determines throughput has not increased. Which of the following is the MOST likely cause of the issue?

A. The wireless router is using an incorrect antenna type.

B. The user’s workstation does not support 802.11ax.

C. The encryption protocol is mismatched.

D. The network is experiencing interference.