Question 1

Jack needs a high-speed Internet connection at a reasonable price. A friend tells him that the DSL central office is at least 7 km from his place. Under the circumstances, which of the following Internet connectivity modes could prove to be most effective?

Accepted Answer

A)  Dial-up
B)  DSL
C)  Satellite
D)  Cable D

Question 2

Of the following Ethernet technology types, which will allow for the longest distance between transmitting devices?

Accepted Answer

A)  1000BaseCX
B)  100BaseTX
C)  10BaseF
D)  10GBaseSR C

Question 3

Jack walks back to his desk and tries to logon to his computer. He receives a message that states he needs to contact his administrator because his account is locked. What could have been the probable cause?

Accepted Answer

A)  An intruder has tried logging on to his system. On successive failed attempts, the account lockout policy has locked his PC.
B)  The entire network is down.
C)  He has left some application open on his computer, which has locked the system.
D)  He needs to continue to try logging on. Eventually the system will allow him to log in. A

Question 4

Tara, a LAN administrator, is tasked with designing a communications datacenter on a very tight budget. What will allow Tara to implement 10 Gigabit speeds, while still maintaining the lowest cost for cabling?

Accepted Answer

A)  Installing 10GbaseSR.
B)  Installing Cat5e.
C)  Installing 10GbaseF.
D)  Installing 10GbaseT.

Question 5

Jack wants to implement a 10 Mbps network that could run through a maximum length of 185 meters. Which connector should he use?

Accepted Answer

A)  ST
B)  RJ-45
C)  BNC
D)  RCA

Question 6

Via what media access method are devices assigned a time slot where they will have exclusive access to transmit data?

Accepted Answer

A)  Time Allocated Transmitting
B)  Time Division Multiplexing
C)  Frequency Determined Multiplexing
D)  Frequency Division Multiplexing

Question 7

Which of the following cabling standards can support a maximum transfer rate of 1 Gbps?

Accepted Answer

A)  CAT3
B)  CAT5e
C)  CAT5
D)  CAT4

Question 8

Which of the following specifies an advantage of using a Plenum grade cable?

Accepted Answer

A)  It releases a less toxic material from the jacket of the cable if the cable catches fire.
B)  It is economical and easily available.
C)  It doubles the data throughput.
D)  It withstands high levels of stress and resists wear and tear.

Question 9

Jack has accidentally messed up his wireless configuration. He has increased the value of the beacon interval from 10 ms to 20 ms. How could this affect the chances of unknown users connecting to his wireless network?

Accepted Answer

A)  Beacon interval value can sometimes affect the visibility of the network.
B)  Beacon interval value does not affect the visibility of the network.
C)  The chance of unknown users connecting is reduced.
D)  The chance of unknown users connecting is increased.

Question 10

Nathan has just finished installing a brand new firewall blocking FTP traffic. Almost immediately after the installation, Nathan is receiving calls that everyone in the office is no longer able to access the internet. Which of the following BEST explains the reason for the outage?

Accepted Answer

A)  Implicit deny is blocking all traffic, not just FTP.
B)  The firewall had a built in IPS that isn't allowing traffic to go through.
C)  The firewall is defective and needs to be replaced.
D)  The firewall's IP address settings were improperly configured.

Question 11

Bob, a new network consultant, is helping a business with their website updates. The firewall is in default deny mode, so he opens up port 21 to allow for FTP access to the webserver from the Internet. However, FTP still does not work. He notices that clients can connect, but cannot transfer any data. Why does FTP still not work?

Accepted Answer

A)  FTP operates on port 23
B)  FTP operates on port 25
C)  FTP also uses port 20
D)  FTP uses UDP which is connectionless

Question 12

What process prevents the private IP address of network nodes from being readily viewable from the public, while also allowing multiple devices with private IP addresses to access the internet through a single public IP address?

Accepted Answer

A)  NAT
B)  Traffic shaping
C)  Port forwarding
D)  IP filtering

Question 13

Jack has been monitoring his network using a specialized application. In spite of using a secure SSID password, unauthentic users are gaining access to his WiFi network without his consent. John wants specific users to be able to connect to his wireless network. What should he do?

Accepted Answer

A)  Enable MAC filtering
B)  Disable SSID broadcast
C)  Set beacon interval values to as low as possible
D)  Set beacon interval values to as high as possible

Question 14

Jack has not logged in to his e-mail account for a couple of weeks. Now, after entering his name and password, he receives an error message indicating that the username or password is invalid. What can he infer from this error message?

Accepted Answer

A)  The physical layer is working.
B)  Username and password are correct.
C)  The network is suffering from traffic congestion.
D)  The central router is down.

Question 15

Spanning Tree Protocol is enabled on what kinds of network devices?

Accepted Answer

A)  Routers
B)  Firewalls
C)  Switches
D)  Gateways

Question 16

Which authentication protocol relies on a Ticket Granting Ticket system for identity verification to network resources?

Accepted Answer

A)  TACACS
B)  Kerberos
C)  Diameter
D)  RADIUS

Question 17

How would you differentiate an RJ-11 connector from an RJ-45 connector?

Accepted Answer

A)  RJ-11 has 4 contacts, while RJ-45 has 8 contacts.
B)  RJ-11 is circular and RJ-45 is rectangular.
C)  RJ-11 is rectangular and RJ-45 is circular.
D)  RJ-11 has 8 contacts, while RJ-45 has 4 contacts.

Question 18

Which of the following 802.11/wireless operating modes can operate without an access point?

Accepted Answer

A)  Infrastructure point
B)  There is no such mode where an access point is not required.
C)  Access less mode
D)  Ad-hoc mode

Question 19

In a typical scenario where DSL provider XYZ Ltd. is providing a DSL connection to Sam over a telephone line provided by ABC communications, who owns the demarc or the NID?

Accepted Answer

A)  ABC communications
B)  Sam
C)  XYZ Ltd.
D)  50-50 split between XYZ Ltd. and ABC communications

Question 20

Which of the following topologies is the most difficult to manage, and is the least easily scalable?

Accepted Answer

A)  Mesh
B)  Ring
C)  Tree
D)  Bus

Exam 23: Media Topologies