Ensurepass

 

QUESTION 161

Which of the following technologies is used on cellular networks?

 

A.

Ethernet

B.

CDMA

C.

CSMA/CA

D.

POTS

 

Correct Answer: B

Explanation:

CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users CDMA employs spread- spectrum technology and a special coding scheme

 

 

QUESTION 162

After a new user moves furniture into a cubicle, the computer does not connect to the network any longer. Which of the following would be the MOST likely reason? (Select TWO).

 

A.

Bad Ethernet switch port

B.

TX/RX reversed

C.

Bad connectors

D.

Bad patch cable

E.

Mismatched MTU

 

Correct Answer: CD

Explanation:

It could be problem with the bad connector because the user just moved furniture to the cubicle and it is quite possible that the movement of the furniture has created problem by disrupting the cabling and connections. These two are the important things which can be broken down whenever there is a physical movement.

 

 

QUESTION 163

A technician is troubleshooting a computer that will not connect to the Internet. The PC is connected to the network. Which of the following tools should the technician use FIRST to understand the NIC configuration?

 

A.

Protocol analyzer

B.

ipconfig

C.

nslookup

D.

tracert

 

Correct Answer: B

Explanation:

ipconfig is a commmand line utility available on all versions of Microsoft Windows starting with Windows NT. ipconfig is designed to be run from the Windows command prompt. This utility allows you to get the IP address information of a Windows computer. It also allows some control over active TCP/IP connections. ipconfig is an alternative to the older ‘winipcfg’ utility.

 

 

QUESTION 164

Which of the following commands displays the routing table on a server or workstation?

 

< /tr>

A.

nbtstat

B.

route

C.

traceroute

D.

nmap

 

Correct Answer: B

Explanation:

The route command allows you to make manual entries into the network routing tables. The route command distinguishes between routes to hosts …

 

 

QUESTION 165

Ann, a network technician, has been troubleshooting a connectivity problem in the LAN room. Ann has diagnosed the problem and implemented a solution. Which of the following would be the NEXT step?

 

A.

Test the theory

B.

Establish a plan of action

C.

Establish a theory

D.

Document findings

 

Correct Answer: D

Explanation:

As to prove the cause of problem documents need to be attached so document finding is the first step after we implemented and diagnosed that problem.

 

 

QUESTION 166

A network technician is setting up a wireless access point that would only allow a certain laptop to be able to access the WAP. By using ACL, which of the following would be filtered to ensure only the authorized laptop can access the WAP?

 

A.

NetBIOS name filtering

B.

IP address filtering

C.

MAC address filtering

D.

Computer name filtering

 

Correct Answer: C

Explanation:

MAC Filtering (or EUI filtering, or layer 2 address filtering) refers to a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network.

 

MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the use of blacklists and whitelists. While the restriction of network access through the use of lists is straightforward, an individual person is not identified by a MAC address, rather a device only, so an authorized person will need to have a whitelist entry for each device that he or she would use to access the network.

 

 

QUESTION 167

A network administrator is adding 24 – 802.3af class 2 VoIP phones and needs to purchase a single PoE switch to power the phones. Which of the following is the MINIMUM PoE dedicated wattage the switch supports to power all of the phones at full power?

 

A.

96W

B.

168W

C.

240W

D.

369.6W

 

Correct Answer: B

Explanation:

The switch supports 168W to power all the phones at full power.

 

 

QUESTION 168

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?

 

A.

The proxy server is set incorrectly.

B.

The Ethernet cable is pinched.

C.

The network gateway is set incorrectly.

D.

The IP address is set incorrectly.

 

Correct Answer: C

Explanation:

When user is able to ping everything in its own subnet that means that all the hosts are reachable however when you are not able to ping anything outside of this subnet then please check if the device is sending traffic to the correct host who should forward it to the further devices.

 

 

QUESTION 169

A network administrator is deploying a new wireless network with over 50 thin WAPs and needs to ensure all WAPs use consistent firmware and settings. Which of the following methods provides this functionality?

 

A.

Use WAP auto-configuration

B.

Use a wireless controller

C.

Use PXE to load and track WAPs

D.

Use DHCP scope options

 

Correct Answer: B

Explanation:

A wireless controller is used in combination with the Lightweight Access Point Protocol (LWAPP) to manage light-weight access points in large quantities by the network administrator or network operations center. The wireless LAN controller is part of the Data Plane within the Cisco Wireless Model. The WLAN controller automatically handles the configuration of anywhere from 6 to 6000 wireless access-points, depending on the model.

 

 

QUESTION 170

The Network Interface Layer of the TCP/IP model corresponds to which of the following layers of the OSI model? (Select TWO).

 

A.

Network

B.

Session

C.

Transport

D.

Physical

E.

Data link

 

Correct Answer: DE

Explanation:

The network layer is responsible for packet forwarding including routing through intermediate routers, whereas the data link layer is responsible for media access control, flow control and error checking.

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