26.
________ is a hybrid version of Ethernet that uses either 10Base-T or 100Base-T.
a. Mullion Ethernet
b. Base-T Ethernet
c. 10/100 Ethernet
d. Token ring Ethernet
e. FDDI Ethernet
27.
10/100 Ethernet:
a. uses 100 Mbps throughout the entire network
b. is not useful in the short run for organizations that are uncertain about which
Ethernet standard to use
c. uses 10 Mbps throughout 100% of the entire network
d. provides traditional 10 Mbps Ethernet connections to client computers utilizing
traditional 10Base-T, with 100 Mbps generally used to the server
e. uses 10 Gbps throughout 100% of the entire network
28.
Which of the following is not true about 10/100 Ethernet?
a. It is not a hybrid type of Ethernet.
b. It provides flexibility for organizations that want to use both the 10Base-T and
100Base-T standards at the same time.
c. 10/100 autosense hubs (and/or switches) are able to detect the signal transmitted by
the client’s NIC and use 10 Mbps or 100 Mbps, depending on what the client uses.
d. Depending upon how it is configured, a 10/100 Ethernet NIC can run at either 10
Mbps or at 100 Mbps.
e. It provides flexibility for organizations that are uncertain about which Ethernet
standard to use in the short term.
29.
Switch-based Ethernet:
a. uses a hub to connect computers
b. has a physical topology of a ring
c. has a logical topology of a ring
d. has a logical topology of a bus
e. usually enables all attached circuits to send or receive packets simultaneously
30.
A switch uses a _____________ that is very similar to a routing table used in a router.
a. cable plan
b. forwarding table
c. network server
d. reversing table
e. switching mullion
31.
Which of the following is not true about layer-2 switched Ethernet?
a. A switch replaces the hub.
b. The physical topology is the same as the physical topology of shared Ethernet: a
ring.
c. The logical topology is a star.
d. The switch uses a forwarding table to route the packet to the correct
circuit/computer.
e. The switch chooses which packet to transmit first if it receives more than one packet
destined for the same computer at the same time, and stores the other packet(s)
temporarily.
32.
Which of the following is not true about switched Ethernet?
a. The switch has a physical bus topology.
b. It uses a switch instead of a hub.
c. It has faster connections (almost immediate) than traditional Ethernet.
d. It essentially provides a point-to–point connection between computers.
e. It has forwarding tables in which entries are learned over time.
33.
Which of the following is a mode in which a switch operates:
a. fast learning switching
b. routing switching
c. fragment-free switching
d. store switching
e. cut switching
34.
Each of the circuits connected to a switch is a separate _______________ circuit connecting
the switch to a device on the network.
a. multipoint
b. point-to-point
c. shared
d. ring
e. star
35.
Wired Ethernet is a _______________ technology for small SOHO devices, meaning that
manufacturers are no longer creating new products. .
a. host
b. legacy
c. caching
d. hub
e. peak
36.
LAN bottlenecks are usually found at the:
a. data entry keyboard and client video monitors
b. LAN server and network circuit
c. hub repeaters and transducer circuit modules
d. client operating system and diskette drive
e. client hard drive and processor
37.
Which of the following can provide fault tolerance for the storage space on a server?
a. RAID
b. SCSI
c. IDE
d. USB
e. EIDE
38.
Which of the following is not a potential bottleneck for LAN performance?
a. number and speed of hard disks in the server
b. amount of memory in the server
c. speed of server’s CPU
d. network interface card
e. all of the answers are potential bottlenecks for LAN performance
39.
If your LAN server is overloaded, which of the following should you not consider (to solve
the server problem)?
a. adding one or more additional servers
b. upgrading the server’s CPU with a faster CPU
c. increasing the amount of memory of the server
d. increasing the number and speed of hard disks in the server
e. replacing the cable with fiber optic cable
40.
To increase the volume of simultaneous messages the LAN circuit can transmit from network
clients to the server(s), you can:
a. increase the CPU of the server
b. upgrade to a bigger circuit
c. increase the number of hard disks on the server
d. increase the amount of disk capacity of the server
e. increase the amount of memory of the server
41.
Breaking a network into smaller parts is called network:
a. fragmentation
b. segmentation
c. localization
d. allocation
e. mitigation
42.
Which of the following is not an effective way to reduce LAN network demand:
a. move files to client computers
b. use disk caching on the client machines
c. find an application that places a large demand on the network and run it a time when
the network is lightly loaded
d. add hidden nodes
e. shift the users’ routines
43.
Which of the following is not a WLAN standard?
a. 802.11ac
b. 802.11a
c. 802.3
d. 802.11b
e. 802.11g
44.
The IEEE designation for the type of wireless standard that uses both the 2.4 and 5 GHz
range is __________.
a. 802.11n
b. 802.11a
c. 802.3
d. 802.11b
e. 802.11g
45.
A(n) _____________ is used in a computer to connect it to a WLAN.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub
46.
A(n) ___________ is a radio transceiver that plays the same role as a hub or switch in a
wired network and connects the WLAN to the wired network.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub
47.
How many channels does the 802.11ac standard provide for communication between the
access point and clients?
a. 4
b. 6
c. 8
d. 11
e. 2
48.
How can a set of 802.11b access points be configured to operate without interference?
a. assigning each access point a different channel to communicate with clients
b. separate each access point by more than 10 meters
c. assign the same channel to no more than two access points
d. use omnidirectional antennas on some access points and directional on others.
e. none of the above
49.
__________ antennas transmit the signal in all directions.
a. directional
b. microware
c. omnidirectional
d. radio
e. vertical
50.
__________ antennas project a signal in only one direction and are most often used on the
inside of an exterior wall pointing to the inside of the building for security reasons.
a. directional
b. microware
c. omnidirectional
d. radio
e. vertical
51.
CSMA/CA is an acronym for:
a. Carrier Sense Multiple Access with Collision Acknowledgment
b. Carrier Sense Mode Access with Carrier Avoidance
c. Carrier Sense Multiple Access with Collision Avoidance
d. Carrier Sensory Multiple Access without Collision Acknowledgment
e. Carrier Sense Multiple Acknowledgment with Collision Avoidance
52.
Another name for distributed coordination function (DCF) is __________.
a. distributed carrier sense method
b. physical carrier sense method
c. physical carrier sense mode
d. distributed carrier sense mode
e. distributed coordination mode
53.
When a computer transmits at the same time because it cannot sense that another computer
on the WLAN is currently transmitting is referred to as the:
a. out of range problem
b. collision problem
c. hidden node problem
d. controlled access problem
e. media access problem
54.
The maximum data rate of a an 802.11ad WLAN is
a. 24 Mbps
b. 36 Mbps
c. 11 Mbps
d. 54 Mbps
e. 9 Mbps
55.
802.11g is backward compatible with which type of LAN?
a. 802.11a
b. 802.11b
c. 802.15
d. 802.3
e. 802.5
56.
How many channels does 802.11g provide for communication with clients,
a. 20
b. 12
c. 10
d. 3
e. 8
57.
The maximum data rate of an 802.11g WLAN is
a. 24 Mbps
b. 36 Mbps
c. 11 Mbps
d. 54 Mbps
e. 9 Mbps
58.
Which of the following standards is backward compatible with IEEE802.11a, b, and g?
a. 802.11a
b. 802.11b
c. 802.11g
d. 802.11n
e. 802.15
59.
Many organizations today are installing traditional wired Ethernet for desktop users and
install Wi-Fi as ______________.
a. overlay networks
b. Bluetooth
c. cellular networks
d. mobile networks
e. Ethernet networks
60.
Which of the following is not determined by a site survey?
a. feasibility of the desired coverage
b. potential sources of interference
c. the security of the WLAN
d. estimated number of access points needed to provide coverage
e. current locations of the wired network into which the WLAN will connect.
61.
_____________ refers to practice of writing symbols in chalk on sidewalks and walls to
indicate the presence of an unsecured WLAN.
a. wardriving
b. chalking
c. warchalking
d. marking
e. identifying
62.
With _____________, the AP permits the owner to provide a list of valid addresses that can
connect.
a. EAP.
b. SSID
c. WEP
d. MAC address filtering
e. SWEP
63.
IEEE 802.11ac runs on which of the following two different frequency spectrums
simultaneously?
a. 2.4GHz and 5GHz
b. 24GHz and 5GHz
c. 11GHz and 54GHz
d. 8GHz and 11GHz
e. 2.4GHz and 11GHz
64.
WiGig is standardized as
a. IEEE 802.11ad
b. IEEE 802.11ac
c. IEEE 802.11n
d. IEEE 802.11g
e. IEEE 802.11a
65. A second type of network that a wireless access point provides is a ______ that is
secured by a separate password that is entered on a Web page when you first connect to
the network.
a. WI-LO network
b. guest network
c. transient network
d. IEEE 802.temp
e. IEEE 802.11guest
66. The ___________ is where the organization housing its primary servers.
a. MDF
b. guest house
c. SOHO network
d. data center
e. load balancer
67. The ________ acts as a router at the front of the server farm.
a. load router
b. MDF
c. Layer 2 switch
d. front-end loader
e. load balancer
68. ____ is the process of creating several logically separate servers on the same physical
computer.
a. Server virtualization
b. Server optimization
c. Server proliferation
d. Server platforming
e. Server redundancy
69. A ___ has a set of high-speed storage devices and servers that are networked together
using a very high speed network.
a. wide area network
b. local area network
c. storage area network
d. storage server
e. local area storage WAN
70. The _____ contains the servers that are designed to serve data to customers and
suppliers.
a. e-commerce edge
b. SAN
c. LAN
d. domain controller
e. bottleneck
Short Answer and Essay Questions:
1. What does a NOS do? What are the major software parts of a NOS? What is the
most important characteristic of a NOS? What are two NOS product names?
2. Describe CSMA, CD and CA. How does this work, in essence? Compare this to
wireless LANS? How are they similar, and how are they different in terms of
MAC?
3. Identify and describe the components of a data center.
4. What are two other names for NIC cards?
5. Describe in detail the difference between a hub and a switch in a LAN. Draw a
diagram of each, and then mark it to show some of the points that you have made
in your discussion of the differences. Discuss the difference between shared
Ethernet and switched Ethernet in light of your answer.
6. Given a specific description of an Ethernet type, be prepared to answer questions
regarding its speed, type of transmission and physical structure, e.g., 100BaseT,
etc.
7. Define the three modes of switch operations.
8. What is the best practice Ethernet at the present time? Describe, and explain why
this is best practice. What is the best practice wireless at the present time?
Describe and explain why this is best practice. Would you install a wired or
wireless Ethernet right now? Describe, if you were a manager, what your
network of choice would be and why.
9. Discuss in detail how you would improve a LAN network’s performance, and
what you would look for.
10. What is the difference in a logical and physical topology?
11. What are three reasons why Wi Fi has grown in popularity?
12. What is the “hidden node” problem, and what do you need to do about it in the
best LAN design for wireless?
13. How might you as a network manager improve WLAN performance?
14. What devices are needed to build a wireless network?
15. Describe war-chalking, war-driving, and war-walking.
16. Compare a switched Ethernet to a wireless Ethernet. What are four essential
differences between these two approaches to building a LAN? Give three reasons
why a switched Ethernet is preferable to wireless. Three reasons why wireless
might be preferred to switched?
17. Select three different types of IEEE 802.11 and describe when it might be best to
use each one.
18. Discuss wireless network security. What are some of the critical problems, what
are some of the defenses against these problems? List five potential weaknesses
in security and five potential solutions to these perceived weaknesses.
19. Describe how you might secure your home wireless network.
20. What is the purpose of the e-commerce edge?