Title: Competency 5 - Competency Exam - Form B- Requires Respondus LockDown Browser
Course: Fundamentals of Networking Technologies (13658) > Section: Competency Modules

This is an alternate version (Form B) of the actual exam to determine if you have mastered the competency.  It must be taken in a testing center.

Q: A serial backbone is the simplest kind of backbone.
- True
- False
A: True
If right: Objective 5.1
If wrong: Objective 5.1

Q: A ____ is simply a linked series of devices.
- star
- star-wired ring
- ring
- daisy-chain
A: daisy-chain
If right: Objective 5.1
If wrong: Objective 5.1

Q: A network ____________________ is the part of a network to which segments and significant shared devices connect.
A: backbone
If right: Objective 5.1
If wrong: Objective 5.1

Q: Which of the following backbone types is the most fault-tolerant?
- Parallel backbone
- Collapsed backbone
- Distributed backbone
- Serial backbone
A: Parallel backbone
If right: Objective 5.1
If wrong: Objective 5.1

Q: The data services company you work for has decided to become an ISP and supply high-capacity Internet connections from its data center. Currently, the data center relies on a 100-BaseFX backbone, but your boss demands that the backbone be upgraded to 10GBase-LR. What kind of infrastructure changes would this require?
- None, since fiber-optic cabling and connectivity devices, including multiplexers, are already in place.
- The fiber-optic cabling will need to be upgraded, but the same connectivity devices and multiplexers can be used.
- The fiber-optic cabling can be reused, but the connectivity devices and multiplexers must be replaced.
- The fiber-optic cabling, connectivity devices, and multiplexers must be replaced.
A: The fiber-optic cabling, connectivity devices, and multiplexers must be replaced.
If right: Objective 5.1
If wrong: Objective 5.1

Q: You are asked to configure a backbone switch that connects servers supplying oceanic and atmospheric data to mariners and pilots around the world. Your network’s traffic load is very high at all times, day and night. What type of switching do you configure the switch to use?
- Bypass switching
- Store-and-forward switching
- Cut-through switching
- Message switching
A: Store-and-forward switching
If right: Objective 5.1
If wrong: Objective 5.1

Q: As a networking consultant, you've been asked to help expand a client's TCP/IP network. The network administrator tells you that the network ID is subnetted as 185.27.54.0/26. On this network, how many bits of each IP address are devoted to host information?
- 4
- 6
- 14
- 26
A: 6
If right: Objective 5.1
If wrong: Objective 5.1

Q: If you subdivide your Class B network into 254 subnets, what is the maximum number of hosts you can assign to any single subnet?
- 255
- 212
- 254
- 225
A: 254
If right: Objective 5.1
If wrong: Objective 5.1

Q: Your company has leased a Class C network whose network ID is 205.61.128.0. You want to create 16 subnets within this network. One of the subnets will have an extended network prefix of 205.61.128.64. What will be the broadcast address for this subnet? (Hint: If you know the number of hosts per subnet, you can easily determine the broadcast address.)
- 205.61.128.79
- 205.61.128.143
- 205.61.128.31
- 205.61.128.95
A: 205.61.128.79
If right: Objective 5.1
If wrong: Objective 5.1

Q: You have enabled NAT on your small office’s router. The router’s private network IP address is 198.162.6.1. Which of the following IP addresses is the most likely to be automatically assigned to one of the workstations that uses this router as its default gateway?
- 192.168.6.1
- 192.168.6.6
- 192.168.255.0
- 192.168.255.255
A: 192.168.6.6
If right: Objective 5.1
If wrong: Objective 5.1

Q: You are rearranging nodes on your Fast Ethernet network. Due to a necessarily hasty expansion, you have decided to supply power to a wireless router in a makeshift telco room using PoE.  What is the minimum cabling standard you must use to connect this wireless router to the network’s backbone?
- RG-6
- RG-59
- Cat 5
- SMF
- Cat 3
A: Cat 5
If right: Objective 5.1
If wrong: Objective 5.1

Q: Suppose you have created six subnets on your network, which leases a group of Class C IPv4 addresses. What subnet mask must you specify in  your clients’ configurations to adhere to your subnetting scheme?
- 255.255.255.6
- 255.255.255.128
- 255.255.255.192
- 255.255.255.224
- 255.255.255.0
A: 255.255.255.224
If right: Objective 5.1
If wrong: Objective 5.1

Q: Wireless signals experience attenuation.
- True
- False
A: True
If right: Objective 5.2
If wrong: Objective 5.2

Q: In ____ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link.
- mobile
- variable
- fixed
- open
A: fixed
If right: Objective 5.2
If wrong: Objective 5.2

Q: The use of multiple frequencies to transmit a signal is known as ____________________ technology.
A: spread-spectrum
If right: Objective 5.2
If wrong: Objective 5.2

Q: A(n) ____________________ assesses client requirements, facility characteristics, and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.
A: site survey
If right: Objective 5.2
If wrong: Objective 5.2

Q: Your office currently runs a mix of 802.11b and 802.11g clients. Rumor has it that your company is about to merge with another company that uses a different wireless technology. Which of the following would be compatible with what your WLAN currently runs?
- 802.11a
- 802.11n
- Bluetooth
- WiMAX
A: 802.11n
If right: Objective 5.2
If wrong: Objective 5.2

Q: Which of the following will help an access point’s transmissions reach farther?
- Limiting the number of stations that may associate with the access point
- Boosting its signal strength
- Using the highest possible channel in the frequency band
- Configuring it to use 802.11n only
A: Boosting its signal strength
If right: Objective 5.2
If wrong: Objective 5.2

Q: Due to popular demand from employees who need to roam from one floor of your office building to another, you are expanding your wireless network. You want to ensure that mobile users enjoy uninterrupted network connectivity without having to reconfigure their workstations’ wireless network connection settings. Which of the following variables must you configure on your new access points to match the settings on existing access points?
- Administrator password
- Scanning rate
- SSID
- IP address
- Signal strength
A: SSID
If right: Objective 5.2
If wrong: Objective 5.2

Q: A customer is considering upgrades his office to wireless. He wants the WAP place in his corner office to be sure he gets the highest bandwidth. What suggestions would you make to this customer? (Choose all that apply)
- Point out that he’s selfish since it is the employees that do most of the work
- Point out that WAPs place at edges of areas provide opportunity for eavesdropping.
- Pint out that a WAP in each corner of the building would give everyone optimal access
- Point out that multiple WAPs could be used to tailor the wireless environment this needs.
- Point out that WAPs should be placed as close to the center of the coverage area as possible.
A: Point out that WAPs place at edges of areas provide opportunity for eavesdropping.; Point out that multiple WAPs could be used to tailor the wireless environment this needs.; Point out that WAPs should be placed as close to the center of the coverage area as possible.
If right: Objective 5.2
If wrong: Objective 5.2

Q: 802.11g is backward compatible with which other 802.11 specification?
- 802.11a
- 802.11b
- 802.11n
- All of the above
A: 802.11b
If right: Objective 5.2
If wrong: Objective 5.2

Q: On a client/server network running TCP/IPv4, what computer initiates the process of assigning an IP address through DHCP?
- The DHCP server
- The gateway
- The client's primary authentication server
- The client
A: The client
If right: Objective 5.3
If wrong: Objective 5.3

Q: You are setting up a new Windows 7 client to connect with your LAN, which relies on DHCP.  You made certain that the client has the TCP/IP protocol installed and is bound to its NIC. Which of the following must you do next to ensure that the client obtains correct TCP/IP information via DHCP?
- Make certain the client’s computer name and host name are identical.
- Enter the client’s MAC address in the DHCP server’s ARP table.
- Make sure the Client for Microsoft Networks service is bound to the client’s NIC.
- Enter the DHCP server address in the Windows 7 TCP/IP configuration.
- Nothing; in Windows 7, the DHCP option is selected by default, and the client will obtain IP addressing information upon connecting to the network.
A: Nothing; in Windows 7, the DHCP option is selected by default, and the client will obtain IP addressing information upon connecting to the network.
If right: Objective 5.3
If wrong: Objective 5.3

Q: A user calls the help desk after dialing into the RRAS server.  The user is unable to connect to the Internet with a Windows laptop.  Their IP address is 0.0.0.0   What is the most likely problem?
- The workstation has become unplugged from the network
- NetBIOS over TCP/IP has been disconnected
- The DNS server cannot be reached.
- The DHCP server cannot be reached.
A: The DHCP server cannot be reached.
If right: Objective 5.3
If wrong: Objective 5.3

Q: Suppose a user on your office network has changed the channel on which his wireless
NIC communicates. Assuming the wireless connection is his only access to the LAN,
what will happen when he next tries to send an e-mail?
- The e-mail program will take longer than usual to send his message.
- The e-mail program will respond with a message indicating it could not connect to the mail server.
- The e-mail program will send the message without problems.
- The e-mail program will request the user to supply his logon credentials again
before sending the message.
A: The e-mail program will respond with a message indicating it could not connect to the mail server.
If right: Objective 5.4
If wrong: Objective 5.4

Q: Suppose your office's only DNS server was down, and you wanted to view the DNS address record for your company's domain. Which of the following TCP/IP utilities would allow you to do this?
- nbtstat
- netstat
- traceroute
- dig
A: dig
If right: Objective 5,4
If wrong: Objective 5.4

Q: You are using your wireless LAN connection to copy documents to a shared folder on your company's file server, when suddenly the connection stalls out. You check your wireless connection status, which indicates that you are still associated with your AP. Next, you run a protocol analyzer program on your workstation, which indicates an excessive number of lost or dropped packets between your workstation and the AP. Which of the following causes could be at fault?
- Another user is attempting to log on under your user name.
- The access point has lost power.
- A source of excessive EMI has been introduced.
- Another AP has been added to the network.
A: A source of excessive EMI has been introduced.
If right: Objective 5.4
If wrong: Objective 5.4

Q: A user is unable to connect to a network with encryption. The user is able to see the network and has the correct passphrase. Which of the following is MOST likely the problem?
- Encryption type
- SSID mismatch
- Standard mismatch
- Signal strength
A: Encryption type
If right: Objective 5.4
If wrong: Objective 5.4

Q: Which of the following does NOT represent a problem for a wireless signal?
- Cross-talk
- Attenuation
- EMI
- Mobile phones
A: Cross-talk
If right: Objective 5.4
If wrong: Objective 5.4

Q: It is best to perform connectivity tests on a computer connected to a live network.
- True
- False
A: False
If right: Objective 5.5
If wrong: Objective 5.5

Q: The.backbone are called ____________________ gateways.
A: core
If right: Objective 5.5
If wrong: Objective 5.5

Q: Suppose a user on your organization's network has changed the subnet mask value in his network interface's TCP/IP properties. Which of the following symptoms might he report when he calls the help desk?
- He cannot connect to the Internet.
- He cannot print to a shared printer on the network.
- He cannot save a document to the network's file server.
- All of the above
A: All of the above
If right: Objective 5.5
If wrong: Objective 5.5

Q: A colleague calls you for help with his home office Internet connection. He is using an 802.11n access point/router connected to a DSL modem. The access point/router’s private IP address is 192.168.1.1 and it has been assigned an Internet routable IP address of 76.83.124.35. Your friend cannot connect to any resources on the Internet using his new Windows workstation.  You ask him to run the  ipconfig command and read the results to you. He says his workstation’s IP address is 192.168.1.3, the subnet mask is 255.255.255.0, and the default gateway address is 192.168.1.3. What do you advise him to do next?
- Display his DNS information.
- Change his gateway address.
- Change his subnet mask.
- Try pinging the loopback address.
- Use the tracert command to contact the access point/router.
A: Change his gateway address.
If right: Objective 5.5
If wrong: Objective 5.5

Q: When the route for an IP message to reach a destination is not known, the message is forwarded to _____________.
- The WINS server
- The default gateway
- The ARP cache
- The DNS server
A: The default gateway
If right: Objective 5.5
If wrong: Objective 5.5

Q: An employee is complaining that when he turn his lights on in the office, he can’t connect to the network.  With the lights off, his system works fine.  What is the problem?
- The cabling system is faulty
- There is a voltage drop when the lights are turned on
- The NIC needs to be replaced
- All of the above
A: The cabling system is faulty
If right: Objective 5.5
If wrong: Objective 5.5

Q: You install a new NIC in a workstation.  You cannot connect to the network.  There don’t appear to be any resource conflicts.  Everything seems configured and install correctly.  What should you try?
- Install anti-virus software
- Replace the workstations
- Replace the NIC
- Use a hardware loopback adapter
A: Use a hardware loopback adapter
If right: Objective 5.5
If wrong: Objective 5.5

Q: You can access your web server by its IP address but not by its host name.  What is the problem?
- lmhosts problem
- WINS problem
- DNS problem
- ARP problem
A: DNS problem
If right: Objective 5.5
If wrong: Objective 5.5

Q: By far, the most popular expansion board NIC today is one that uses a(n) ____ bus.
- onboard
- PCIe
- ExpressCard
- ISA
A: PCIe
If right: Objective 5.6
If wrong: Objective 5.6

Q: To install a NIC, you must first install the ____.
- software
- hardware
- drivers
- bus
A: hardware
If right: Objective 5.6
If wrong: Objective 5.6

Q: A computer’s ____________________ is the circuit, or signaling pathway, used by the motherboard to transmit data to the computer’s components, including its memory, processor, hard disk, and NIC.
A: bus
If right: Objective 5.6
If wrong: Objective 5.6

Q: A(n) ____________________ NIC is integrated into the motherboard.
A: on-board
If right: Objective 5.6
If wrong: Objective 5.6

Q: Which of the following is a significant advantage to using an SFP interface on a router rather than an on-board NIC?
- The SFP will be capable of higher throughputs.
- The SFP can be added or removed without affecting operations, thus allowing for customization and future upgrades.
- The SFP can accept multiple types of connectors, allowing the router to connect two disparate network types.
- The SFP promises greater security, as it can encrypt and decrypt data.
A: The SFP can be added or removed without affecting operations, thus allowing for customization and future upgrades.
If right: Objective 5.6
If wrong: Objective 5.6

Q: Which of the following applies to virtual machines, no matter what type of virtualization software they are created with?
- They can only belong to one VLAN.
- They cannot be addressed by clients on a physical LAN.
- They cannot be assigned Internet-routable IP addresses.
- They exist as files on the hard drive of their host.
A: They exist as files on the hard drive of their host.
If right: Objective 5.7
If wrong: Objective 5.7

Q: You are running KVM on a Fedora Linux computer and have configured a virtual server to use the bridged networking type. The IP address of your host machine’s NIC is 192.168.25.71. Assuming your physical LAN uses DHCP, which of the following addresses is most likely the one assigned to your virtual server?
- 192.168.25.1
- 192.168.25.83
- 192.168.0.0
- Not enough information to draw a conclusion
A: 192.168.25.83
If right: Objective 5.7
If wrong: Objective 5.7

Q: Which of the following network configuration types is best used for a company’s e-mail server?
- Host-only
- Bridged
- NAT
- Grouped
A: Bridged
If right: Objective 5.7
If wrong: Objective 5.7

Q: You have created multiple virtual machines on your workstation to test different unified communications programs. You want these machines to be available to your IT colleagues for testing, but you do not want the traffic generated by their use to interfere with routine business LAN traffic. Meanwhile, on another workstation a coworker has installed additional communications programs for review. You decide to create a new VLAN devoted to software evaluation. Where do you add your coworker’s virtual machines to the new VLAN?
- On your host workstation, where you established the new VLAN
- On the LAN switch, which manages the VLAN
- On your friend’s host workstation, where the virtual machines reside
- On the LAN router, which directs traffic between VLANs
A: On your friend’s host workstation, where the virtual machines reside
If right: Objective 5.7
If wrong: Objective 5.7

Q: How must a physical NIC be configured so that it can connect its host’s VMs to multiple VLANs?
- As a trunk
- As a port group
- As a channel
- As a team
A: As a trunk
If right: Objective 5.7
If wrong: Objective 5.7

Q: A VM must use the same operating system, type of CPU, storage drive, and NIC as the physical computer it resides on.
- True
- False
A: False
If right: Objective 5.7
If wrong: Objective 5.7

Q: Each VM is known as a ____.
- guest
- host
- client
- node
A: guest
If right: Objective 5.7
If wrong: Objective 5.7

Q: ____ is the most widely implemented virtualization software today.
- Hyper-V
- Citrix
- VirtualBox
- VMware
A: VMware
If right: Objective 5.7
If wrong: Objective 5.7

Q: ____ connect vNICs with a network, whether virtual or physical.
- Virtual routers
- Virtual crossovers
- Virtual duplexers
- Virtual bridges
A: Virtual bridges
If right: Objective 5.7
If wrong: Objective 5.7

Q: In the NAT networking mode, a vNIC relies on the ____ to act as a NAT device.
- guest machine
- reference machine
- host machine
- management machine
A: host machine
If right: Objective 5.7
If wrong: Objective 5.7

Q: The software that allows you to define VMs and manages resource allocation and sharing among them is known as a(n) ____________________.
A: virtual machine manager / hypervisor / Hypervisor
If right: Objective 5.7
If wrong: Objective 5.7

Q: In bridged mode, a(n) ____________________ accesses a physical network using the host machine’s NIC.
A: vNIC
If right: Objective 5.7
If wrong: Objective 5.7

Q: Which of the following virtual devices is the BEST to use to host a company's website?
- PBX
- Server
- Switch
- Desktop
A: Server
If right: Objective 5.7
If wrong: Objective 5.7

Q: Which term best describes the capability of cloud computer to dynamically resize service and storage capabilities?
- Self-service
- Metered service
- Elastic
- Multiple platform support
A: Elastic
If right: Objective 5.7
If wrong: Objective 5.7