Download New Updated (July) CompTIA N10-005 Actual Test 1-10

Ensurepass

QUESTION 1

If a NIC does not have a link light, there is a failure at which of the following OSI layers?

 

A.

Physical

B.

Session

C.

Data link

D.

Presentation

 

Correct Answer: A

Explanation:

The NIC does not have light refers to a situation that there could be a fault in the LAN cable or the ports are down and all of these fall under the physical layer. To make it simple, it falls in physical layer because blinking lights refers to the physical connectivity.

 

 

QUESTION 2

Which of the following is a Class A IP address?

 

A.

10.4.0.1

B.

169.254.0.1

C.

192.168.0.1

D.

254.200.0.1

 

Correct Answer: A

Explanation:

Class A ip address ranges from 10.0.0.0 to 10.255.255.255

 

 

QUESTION 3

Which of the following performance optimization techniques would be MOST beneficial for a network-wide VoIP setup? (Select TWO).

 

A.

Proxy server

B.

Traffic shaping

C.

Caching engines

D.

Load balancing

E.

Quality of service

 

Correct Answer: BE

Explanation:

Traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result of traffic shaping is a smoothed packet output rate. QoS (Quality of Service) is a major issue in VOIP implementations. The issue is how to guarantee that packet traffic for a voice or other media connection will not be delayed or dropped due interference from other lower priority traffic.

 

Things to consider are:

Latency: Delay for packet delivery

Jitter: Variations in delay of packet delivery

Packet loss: Too much traffic in the network causes the network to drop packets Burstiness of Loss and Jitter: Loss and Discards (due to jitter) tend to occur in bursts

 

 

 

QUESTION 4

Companies trying to cut down on constant documentation of IP addresses could use which of the following?

 

A.

Longer lease times

B.

More reservations

C.

Larger scopes

D.

Dynamic IP addressing

 

Correct Answer: D

Explanation:

In Dynamic IP addressing all the hosts with private ip address will be patted to the same ip so the administrator will not have to keep track of each and every host with private ip mapped to a static public ip address.

 

 

QUESTION 5

Ann, a new user, has a workstation that has connectivity to the printer located in her department, but cannot access the Internet. The result of an ipconfig command on Ann’s workstation is as follows:

 

clip_image002IP address: 192.168.0.124

clip_image002[1]Subnet Mask: 255.255.255.128

clip_image002[2]Default Gateway: 192.168.0.254

 

Which is MOST likely preventing the user from accessing the Internet?

 

A.

Duplicate IP address

B.

Incorrect gateway

C.

Incorrect VLAN

D.

Bad switch port

 

Correct Answer: B

Explanation:

We usually give default gateway as an end device which is directly connected with ISP so in this case user has lost his connectivity with due to wrong default gateway configured.

 

 

QUESTION 6

Which of the following is the Telco end of a T1 demarc?

 

A.

Smart jack

B.

Network tap

C.

Proxy server

D.

IDF

 

Correct Answer: A

Explanation:

Smartjacks provides diagnostic capabilities. A very common capability provided by a smartjack is loopback, such that the signal from the telephone company is transmitted back to the telephone company. This allows the telephone company to test the line from the central office, without the need to have test equipment at the customer site.

The telephone company usually has the ability to remotely activate loopback, without even needing personnel at the customer site. Wh
en looped back, the customer equipment is disconnected from the line.

 

 

QUESTION 7

Which of the following technologies can cause interference for 802.11g?

 

A.

RADAR

B.

802.11a

C.

IrDA

D.

Bluetooth

 

Correct Answer: D

Explanation:

This wireless communication standard has a maximum transmission speed of 54 Mbits per second and a typical indoor
range of 30 meters. It uses the 2.4 GHz band. This band may have to deal with interference from cordless telephones, Bluetooth devices, and various appliances.

 

 

QUESTION 8

A technician has been dispatched to investigate an issue where several users in the same aisle have stated they have had no network connection for over an hour. When the technician gets there, the network seems to be up and running. Which of the following should the technician do NEXT?

 

A.

Ask the users for more information, such as which applications were not functioning.

B.

Power-cycle the switch that the users share to clear out cached DNS records.

C.

Escalate the issue to the network administrator to have their domain credentials reset.

D.

Close and document the service call, as there was no actual issue affecting the users.

 

Correct Answer: A

Explanation:

Because the system was up and running when the technician reached there, he can ask for applications that were not working or can ask for more information so that he can isolate the problem. Power cycling will not help because the system is already up and recycling can wipe out logs. Escalation will also not help because the system is now up and running. Closing the call will be unfair because the same instance can occur again.

 

 

QUESTION 9

Ann, a home user, wishes to confine a wireless network to devices ONLY inside of her house. Which of the following will accomplish this?

 

A.

Decreasing radio strength

B.

MAC filtering

C.

WEP encryption

D.

SSID broadcast disable

 

Correct Answer: A

Explanation:

Decreasing Radio Strength will reduce signal strength outside the house and will accomplish what she is intending to do.

 

 

QUESTION 10

Which of the following defines the amount of time a host retains a specific IP address before it is renewed or released?

 

A.

DHCP lease

B.

DNS suffix

C.

Subnet mask

D.

DHCP reservation

 

Correct Answer: A

Explanation:

By default, each IP address assigned by a DHCP Server comes with a one-day lease, which is the amount of time that the address is valid.

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