Question 1

You set up a home computer with Windows 7. After connecting to the Internet, you look for the network status indicator in the computer notification tray. The network indicator is a network icon with:&#10;A)A green light.&#10;B)A cable.&#10;C)A red X.&#10;D)A lightning bolt.

Accepted Answer

Windows 7 network indicator is a network icon with a cable.
Key Takeaway: A red X would indicate no network connection.

Question 2

You are preparing to network a branch of your office in another building. They need to connect multiple computers on a single segment and have dedicated lines (between nodes) with full bandwidth. Which device do you choose for this task?

A)Router
B)Server
C)Switch
D)Hub

Switch

Accepted Answer

A switch will provide all of these capabilities.
Key Takeaway: Switches are almost always used in place of hubs, as hubs share the bandwidth between all connected nodes at the same time.

Question 3

Which of the following would work for a 1Gbps network (select all that apply)?&#10;A)Cat 6&#10;B)Cat 5&#10;C)Cat 5e&#10;D)Cat 3

Accepted Answer

Both Cat 6 and Cat 5e cable can support bandwidths of up to 1Gbps.
Key Takeaway - Cat 6 and 5e UTP cable are rated for Gigabit Internet, while Cat 5 is used for 10/100 Network (up to 100Mbps). Cat 3 cable (used for phone lines) can transfer up to 10Mbps. NOTE: MBps refers to Mega Bits per second, which is different from Mbps (Megabytes per second). 1 Byte=8 Bits.

Question 4

What is the major difference between a router and a layer 3 switch?&#10;A)A layer 3 switch transmits packets across networks, whereas a router switch transmits packets within a network&#10;B)A router transmits packets across networks, whereas a layer 3 switch transmits packets within a network&#10;C)Both operate identically&#10;D)A router switches packets using a microprocessor and a Layer 3 switch routes using application-specific integrated circuit (ASIC) hardware

Accepted Answer

In a router, packet switching takes place using a microprocessor and a Layer 3 switch performs this using application-specific integrated circuit (ASIC) hardware.
Key Takeaway: A layer 3 switch is a high-performance device for network routing. Layer 3 switches actually differ very little from routers. A Layer 3 switch supports almost all the routing protocols that a router does. Both inspect incoming packets and make dynamic routing decisions based upon the source and destination addresses inside. Layer 3 switches were conceived to improve the performance of routers used in LANs. The key difference between Layer 3 switches and routers lies in the hardware technology used to build the unit. The hardware inside a Layer 3 switch merges that of traditional switches and routers, replacing some of a router's software logic with hardware to offer better performance in some situations. Layer 3 switches often cost less than traditional routers.

Question 5

You are working on a network design and you determine that a new testing application requires multiple hosts that must be capable of sharing data between each host and a server running 10Mbps. Other departments use applications that require less than 3Mbps to the server. What should you recommend?

A)Replace the 10Mbps Ethernet hub with a 100Mbps Ethernet hub.
B)Install a router between departments.
C)Use a bridge to break up collision domains.
D)Use a switch with a 100Mbps uplink to the server and 10Mbps to the hosts.

Accepted Answer

To get this design to work, you need to use a 100 Mbps switch with 10 Mbps available to each of the hosts on the network.
Key Takeaway: A prime requirement of network design is to use a network device that is above the expected bandwidth on the network. Since the application requires a bandwidth of 10 Mbps to communicate with the server, you would need a 100 Mbps switch. Make 10 Mbps available to every device on the network to ensure that all applications can be used.

Question 6

Jack heads the network management team at his organization. Since the organization has doubled the headcount by hiring 20 employees, the users have been experiencing problems with slower network/Internet access. Which network device should Jack use to have full bandwidth of the medium while transmitting?

A)Hub
B)Transceiver
C)Repeater
D)Switch

Accepted Answer

Jack's organization may have been using a hub earlier. With the increase in head count, he needs to install a switch to be able to provide full-dedicated bandwidth to all the machines on the network.
Key Takeaway: It is not uncommon for small networks to use a hub, which is a cost-effective device. The trade-off is primarily with the speed and bandwidth of access. This is not an issue with a small number of people being serviced by the hub; however, as the number of users on a network increases, the bandwidth available diminishes, resulting in slower Internet access. Migrating to a switch provides a consistent bandwidth to all the devices, irrespective of the users connected to the switch.

Question 7

What is the maximum amount of power that can be transmitted using PoE technology?&#10;A)30V&#10;B)10W&#10;C)10 V&#10;D)25.5W

Accepted Answer

Power over Ethernet or PoE technology describes a system to transfer electrical power and data to remote devices over standard twisted-pair cable in an Ethernet network at a power range of 25.5 W.
Key Takeaway: Power over Ethernet (PoE) is used for wired Ethernet LANs. PoE allows the electrical current necessary for the operation of each device to be carried by the data cables along with the data itself. This minimizes the number of wires that must be strung in order to install the network. The result is , easier maintenance, and greater installation flexibility than with traditional wiring.

Question 8

You want to improve network performance by increasing the bandwidth available to hosts and limiting the size of the broadcast domains. Which of the following options should you use?&#10;A)Switches&#10;B)Bridges&#10;C)Managed hubs&#10;D)Switches configured with VLANs

Accepted Answer

Switches configured with VLANs should be used to improve network performance by increasing the bandwidth available. This will limit the size of the broadcast domains.
Key Takeaway: A broadcast domain is a logical division of a computer network in which all nodes can reach each other by broadcasting at the data link layer. A broadcast domain can be within the same LAN or it can be routed towards other LAN segments. VLANs reduce the need to have routers deployed on a network to contain broadcast traffic. Flooding of a packet is limited to the switch ports that belong to a VLAN, so bandwidth available to hosts is automatically increased.

Question 9

What is the maximum allowable segment length to connect stations to a hub?&#10;A)100 meters&#10;B)50 meters&#10;C)1000 meters&#10;D)100 feet

Accepted Answer

The maximum allowable distance to connect stations to a hub is 100 meters. Beyond this, the signal attenuates severely, resulting in poor transmission.
Key Takeaway: Always ensure that you design a network where the maximum distance of the nodes from a hub does not exceed 100 meters.

Question 10

Which of the following provides caching and load balancing capabilities by redirecting users to a working server when the server they are requesting content from fails?&#10;A)Content switch&#10;B)Gateway&#10;C)Firewall&#10;D)Brouter

Accepted Answer

Of the components mentioned here, a content switch provides caching and load balancing capabilities.
Key Takeaway: A content switch provides caching and load balancing capabilities by redirecting the users to a working server if the server they are requesting content from fails. The users contact a virtual IP address and the servers are assigned a real IP address. All servers have the same copy of the content.

Question 11

You intend to configure your wireless network with a minimum number of beacon frames transmitted in a given time interval. Which of these beacon interval values will help you accomplish this?&#10;A)100 ms&#10;B)250 ms&#10;C)10 ms&#10;D)1 second

Accepted Answer

The answer of You intend to configure your wireless network...

Question 12

What utility can be used to locate a black hole router?&#10;A)NSLOOKUP&#10;B)ICMP Echo Request&#10;C)Dig&#10;D)Tracert

Accepted Answer

The answer of What utility can be used to locate...

Question 13

From the following choices, choose the option that best describes a failover mechanism used with DHCP:&#10;A)IP Scope&#10;B)Reserved IP Addresses&#10;C)Automatic Private IP Addressing&#10;D)Subnet Masking

Accepted Answer

The answer of From the following choices, choose the option...

Question 14

James, a user, is attempting to access a web page and is unable to. Jennifer, a technician, arrives and pings a computer on the same subnet and receives successful replies. When Jennifer looks at the local computer's IP address she notices the following IP address: 169.254.15.11. Given the information in this scenario, which of the following is MOST likely not working properly?

A)DNS
B)The Web Server of the site.
C)The Network Interface Card.
D)DHCP

Accepted Answer

The answer of James, a user, is attempting to access...

Question 15

The period of time allotted for devices to retain an IP address from Dynamic Host Configuration Protocol is called what?&#10;A)The IP Address Scope&#10;B)The IP Address Range&#10;C)The IP Address Lease&#10;D)The IP Address Reservation

Accepted Answer

The answer of The period of time allotted for devices...

Question 16

Kevin, a network administrator, wishes to ensure that DHCP traffic is allowed through all host based IPSs. What default port (or ports) should Kevin check to make sure is (are) open? (CHOOSE ALL THAT APPLY)

A)66
B)67
C)68
D)110
E)389

Accepted Answer

The answer of Kevin, a network administrator, wishes to ensure...

Deck 20: Install Configure