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 administrator needs to provide remote clients with access to an internal web application. Which of
the following methods provides the HIGHEST flexibility and compatibility while encrypting only the connection to
the web application?


A. Clientless VPN
B. Virtual desktop
C. Virtual network computing
D. mGRE tunnel

A technician installed an 8-port switch in a user's office. The user needs to add a second computer in the office,
so the technician connects both PCs to the switch and connects the switch to the wall jack. However, the new
PC cannot connect to network resources. The technician then observes the following:
The new computer does not get an IP address on the client's VLAN.
Both computers have a link light on their NICs.
The new PC appears to be operating normally except for the network issue.
The existing computer operates normally.
Which of the following should the technician do NEXT to address the situation?


A. Contact the network team to resolve the port security issue.
B. Contact the server team to have a record created in DNS for the new PC.
C. Contact the security team to review the logs on the company's SIEM.
D. Contact the application team to check NetFlow data from the connected switch.

A technician is monitoring a network interface and notices the device is dropping packets. The cable and
interfaces, however, are in working order. Which of the following is MOST likely the cause?


A. OID duplication
B. MIB mismatch
C. CPU usage
D. Encapsulation errors

A technician needs to configure a routing protocol for an internet-facing edge router. Which of the following
routing protocols will the technician MOST likely use?


A. BGP
B. RIPv2
C. OSPF
D. EIGRP

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 is considered a physical security detection device?


A. Cameras
B. Biometric readers
C. Access control vestibules
D. Locking racks

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

Which of the following protocols is widely used in large-scale enterprise networks to support complex networks
with multiple routers and balance traffic load on multiple links?


A. OSPF
B. RIPv2
C. QoS
D. STP

Which of the following types of attacks can be used to gain credentials by setting up rogue APs with identical
corporate SSIDs?


A. VLAN hopping
B. Evil twin
C. DNS poisoning
D. Social engineering