JK0-019 CompTIA E2C Network + Certification Exam Set 7

Which of the following operate at the Data Link layer of the OSI model? (Select TWO).

A. MAC address

B. Router

C. Hub

D. Switch

E. IP address 

Options are :

  • B,E
  • A,D (Correct)
  • C,D
  • A,B

Answer : A,D

Which of the following records allows for reverse DNS lookups? 

Options are :

  • AAAA
  • PTR (Correct)
  • A

Answer : PTR

A technician has low signal strength connecting two wireless bridges. Which of the following could be the problem?   

Options are :

  • Opposing antenna polarizations (Correct)
  • WPA 2 encryption
  • Low PoE wattage
  • Short distance between antennas

Answer : Opposing antenna polarizations

A user reports they are unable to access a file on a mapped network drive. A technician discovers the server where the file is located did not come back online after last night’s power outage and manually powers the server back online. The technician then verifies the user can connect to their  file. Which of the following troubleshooting steps should the technician do NEXT?   

Options are :

  • Question the user
  • Document findings, actions, and outcomes (Correct)
  • Escalate by following change procedures
  • Establish a plan of action to resolve the problem

Answer : Document findings, actions, and outcomes

A network administrator notices that load balancing is not working properly on the web cluster as previously configured. In speaking with management, a change to the IP addressing scheme was made yesterday which possibly affected one member of the cluster. Due to the timing of the events, the administrator theorizes that this change caused the problem. Which of the following should the administrator do NEXT?   

Options are :

  • Test the theory by analyzing logs (Correct)
  • Escalate to the management team
  • Change the IP address back to its previous state
  • Create a plan of action to present to management

Answer : Test the theory by analyzing logs

Which of the following is the difference between 802.11b and 802.11g?   

Options are :

  • Transmission power
  • Speed (Correct)
  • Frequency
  • Distance

Answer : Speed

In order for switching loops to be automatically disabled, which of the following needs to be implemented?   

Options are :

  • Spanning-tree protocol (Correct)
  • Port mirroring
  • Collision domains
  • Routing tables

Answer : Spanning-tree protocol

Joe has a small office and is looking to replace his phone system with a lower cost solution that requires minimal in-house support. Which of the following is the BEST choice?   

Options are :

  • Wide Area Network
  • Virtual LAN
  • NAT
  • Virtual PBX (Correct)

Answer : Virtual PBX

Which of the following describes a manually entered route? 

Options are :

  • Dynamic
  • Static (Correct)
  • Multicast
  • Unicast

Answer : Static

A network administrator must ensure that both the server and the client are authenticated to the wireless system before access is granted. Which of the following should be implemented to meet this requirement?   

Options are :

  • MS-CHAPv2
  • EAP-TTLS (Correct)

Answer : EAP-TTLS

A user reports that several spots within the company’s office have intermittent connectivity issues with the newly installed wireless network. There are several WAPs located around the office to provide a strong signal wherever the users are. Which of the following is the MOST likely cause of the problem? 

Options are :

  • WEP encryption
  • Channel overlap (Correct)
  • Latency
  • Incompatible network card

Answer : Channel overlap

Which of the following is associated with DNS reverse lookup zones? 

Options are :

  • MX
  • TXT
  • PTR (Correct)

Answer : PTR

A user reports that some normally accessible external sites are not responding, but most other sites are responding normally. Which of the following is MOST likely the cause?   

Options are :

  • VLAN tag mismatch
  • Wrong subnet mask
  • Faulty routing rule (Correct)
  • Smurf attack

Answer : Faulty routing rule

A network technician needs to configure a port on a switch to provide connectivity and electrical support to a WAP being installed in a warehouse. Which of the following features needs to be configured on the switch? 

Options are :

  • Port forwarding
  • PoE (Correct)
  • VTP trunking
  • STP

Answer : PoE

Which of the following DNS records is used in conjunction with 192:168::1:10? 

Options are :

  • TXT
  • AAAA (Correct)
  • PTR
  • MX

Answer : AAAA

Ann, a technician, is installing network cables for an office building. Some of the cables are not showing active on the switch even when moved to different ports. Which of the following is MOST likely the cause?   

Options are :

  • Faulty F-connectors
  • Port speed mismatch
  • Bad switch
  • Bad wiring (Correct)

Answer : Bad wiring

Which IEEE protocol is used with VLAN technology? 

Options are :

  • 802.1q (Correct)
  • 802.11a
  • 802.1m
  • 802.11b

Answer : 802.1q

Which of the following wireless standards has a MAXIMUM transfer rate of 11Mbps 

Options are :

  • 802.11a
  • 802.11b (Correct)
  • 802.11n
  • 802.11g

Answer : 802.11b

Which of the following wiring distribution types, often found in company closets, is used to connect wiring from individual offices to the main LAN cabling? 

Options are :

  • IDF
  • 66 block
  • Patch panel (Correct)
  • MDF

Answer : Patch panel

Which of the following defines an IP address that is NOT routed on the Internet? 

Options are :

  • Multicast
  • Private (Correct)
  • Public
  • Classful

Answer : Private

A forward lookup zone converts which of the following?   

Options are :

  • IP Addresses to MAC addresses
  • Hostnames to IP addresses (Correct)
  • MAC addresses to IP addresses
  • IP addresses to hostnames

Answer : Hostnames to IP addresses

A network technician has just upgraded a switch. The new switch’s IP range and subnet mask correctly match other network devices. The technician cannot ping any device outside of the switch’s own IP subnet. The previous switch worked correctly with the same settings. Which of the following is MOST likely the problem?   

Options are :

  • The proxy server is set incorrectly.
  • The IP address is set incorrectly
  • The Ethernet cable is pinched.
  • The network gateway is set incorrectly (Correct)

Answer : The network gateway is set incorrectly

Dynamic DNS provides which of the following services? 

Options are :

  • Automatic registration of host records (Correct)
  • Provides aliases for additional search suffixes
  • Provides round robin load balancing for web servers
  • Translates public host names to private host names

Answer : Automatic registration of host records

Which of the following allows for groups of ports on the same switch to operate as a part of  different segmented networks? 

Options are :

  • STP
  • VLAN (Correct)
  • RIP
  • MTU

Answer : VLAN

When a loop occurs, which of the following STP components determines which port to disable? 

Options are :

  • Convergence
  • BPDU guard
  • Root bridge (Correct)
  • MAC address

Answer : Root bridge

Which of the following STP states indicates an inactivated port due to a loop? 

Options are :

  • Disabled
  • Learning
  • Blocking (Correct)
  • Forwarding

Answer : Blocking

A network administrator needs to implement a monitoring tool and be able to send log information  to a server and receive log information from other clients. Which of the following should be implemented? (Select TWO).


B. Network sniffer

C. Syslog

D. System log

E. History log 

Options are :

  • C,D
  • A,C (Correct)
  • A,B
  • B,E

Answer : A,C

A technician has narrowed down the cause of a problem to two possible sources. Which of the following should the technician do NEXT?   

Options are :

  • Choose the less likely cause and test to eliminate.
  • Establish a plan of action for each.
  • Implement a solution for both causes to be sure all possibilities are covered.
  • Choose the more likely cause and test to confirm (Correct)

Answer : Choose the more likely cause and test to confirm

A network administrator suspects a broadcast storm is causing performance issues on the network. Which of the following would be used to verify this situation? 

Options are :

  • Multimeter
  • Environmental monitor
  • Protocol analyzer (Correct)
  • Toner probe

Answer : Protocol analyzer

The term virtual switch refers to which of the following?   

Options are :

  • A computer component that controls environmental elements, such as lights and thermometers
  • A switch that has not yet been implemented in the local network
  • A logical, rather than a physical switch device (Correct)
  • Migrating an entire environment to virtualization

Answer : A logical, rather than a physical switch device

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