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 changed CDP neighbor
B. Asymmetrical routing
C. A switching loop
D. An incorrect IP address

Which of the following would be the BEST choice to connect branch sites to a main office securely?


A. VPN headend
B. Proxy server
C. Bridge
D. Load balancer

A technician is installing the Wi-Fi infrastructure for legacy industrial machinery at a warehouse. The equipment
only supports 802.11a and 802.11b standards. Speed of transmission is the top business requirement. Which
of the following is the correct maximum speed for this scenario?


A. 11Mbps
B. 54Mbps
C. 128Mbps
D. 144Mbps

Which of the following is the MOST cost-effective alternative that provides proper cabling and supports gigabit
Ethernet devices?


A. Twisted cable with a minimum Cat 5e certification
B. Multimode fiber with an SC connector
C. Twinaxial cabling using an F-type connector
D. Cable termination using TIA/EIA-568-B

A network team is getting reports that air conditioning is out in an IDF. The team would like to determine
whether additional network issues are occurring. Which of the following should the network team do?


A. Confirm that memory usage on the network devices in the IDF is normal.
B. Access network baseline data for references to an air conditioning issue.
C. Verify severity levels on the corporate syslog server.
D. Check for SNMP traps from a network device in the IDF.
E. Review interface statistics looking for cyclic redundancy errors.

Which of the following is the NEXT step to perform network troubleshooting after identifying an issue?


A. Implement a solution.
B. Establish a theory.
C. Escalate the issue.
D. Document the findings.

A technician is assisting a user who cannot connect to a website. The technician attempts to ping the default
gateway and DNS server of the workstation. According to troubleshooting methodology, this is an example of:


A. a divide-and-conquer approach.
B. a bottom-up approach.
C. a top-to-bottom approach.
D. implementing a solution.

Which of the following layers of the OSI model has new protocols activated when a user moves from a wireless
to a wired connection?


A. Data link
B. Network
C. Transport
D. Session

A network technician is troubleshooting a new web server connectivity issue. The network technician discovers
the following on the support ticket:
The server's IP address can be pinged from the client PCs.
Access to the web resource works correctly when on the server's console.
No clients can access the server's data via URL.
The server does not have a firewall configured.
No ACLs are preventing connectivity from the client's network.
All services on the server are operating normally, which was confirmed by the server team.
Which of the following actions will resolve the issue?


A. Reset port security on the switchport connecting the server.
B. Adjust the web server's NTP setting to match the client settings.
C. Configure A records for the web server.
D. Install the correct MIB on the web server.

A client utilizes mobile tablets to view high-resolution images and videos via Wi-Fi within a corporate office
building. The previous administrator installed multiple high-density APs with Wi-Fi 5, providing maximum
coverage, but the measured performance is still below expected levels. Which of the following would provide
the BEST solution?


A. Channel bonding
B. EIRP power settings
C. Antenna polarization
D. A directional antenna