WorksheetsIT midterm
Total questions: 90
Worksheet time: 47mins
The OSI Model is a theoretical model and does not perform any real function.
True
False
(PDU) Application
frame
packet
data
bit
segment
(PDU) Network
frame
segment
bit
packet
data
Signal ____________ refers to the deterioration of a signal as it travels over a large distance.
a. collision
d. attenuation
b. juxtaposition
c. crosstalk
What type of cable would you use if you need to install a network cable between two buildings that are 6 miles from each other?
a. Cat6e
d. multi-mode fiber
b. Cat5e
c. single-mode fiber
What is the data rate of North American T1 line?
a. 44.736 Mbps
b. 34.368 Mbps
c. 1.544 Mbps
The weekest form of wireless security is
a. WEP
b. WPA
c. WPA-2
d. WPA-2 Enterprise
data-link(PDU)
data
segment
packet
frame
bit
physical(PDU)
bit
data
packet
frame
segment
transport(PDU)
data
bit
frame
segement
packet
Determines the best path
application
data-link
transport
networking
Media access
networking
data-link
transport
application
Closest to the end user. Access network services
data-link
transport
networking
application
segments and delivers data
transport
application
data-link
networking
On what layer is the MAC address assigned?
a. network
b. physical
c. transport
d. data-link
What are the two sublayers of the data-link layer?
a. HTTP
b. DNS
c. Link Local (LLC)
d. Media Access Control (MAC)
What three things in the session layer responsible for:
a. encryption
b. maintains communication between nodes
c. start communication between nodes
d. translation
f. stops communication between nodes
What does OSI stand for?
a. Open systems interface
b. Open systems Interconnection
c. Open signs Interconnection
d. Official systems Interface
layer 2
router
hub
switch
Layer 3
hub
router
switch
layer 1
hub
switch
router
What three things is the presentation layer responsible for?
a. encryption
b. decapsulation
c. translation
d. compression
e. encapsulation
On what network device are VLANs configured?
a. router
b. firewall
c. hub
d. switch
Defining the type of cabling used in a network takes place at the (a) layer
An IP address is known as a layer three address.
True
False
On what layer is an IP address assigned?
a. network
b. transport
c. data-link
d. physical
What layer is responsible for finding the best path for data to take?
(a)
What does the acronym OSI stand for?
(a)
Physical medium that uses light pulses.
a. copper
b. wireless
c. fiber optic
A good example of external interference affecting electrical signals over UTP is
a. crosstalk
b. cell phones
c. large electrical motors
d. radios
UTP consists of ___ pairs of color coded wires
a. 2
b. 8
c. 16
d. 4
Coaxial
a. RJ45
b. BNC, F
c. ST, LC
UTP
a. ST, LC
b. BNC, F
c. RJ45
Fiber-optic
a. ST, LC
b. RJ45
a. BNC, F
Physical medium that uses electrical impulses.
a. wireless
b. copper
c. fiber-optic
The weakening of the network signal over long cable lengths is known as latency
True
False
Which statement correctly describes network latency?
a. The capacity of a particular medium to carry data.
b. The measure of the usable data transferred across the media.
c. The total amount of time, including delays, it takes for data to get from one device to another.
d. The measure of the bits transferred across the media over a given period of time.
This term refers to a special grade of wire that can be run through general purpose spaces; outside of conduit that is slow to burn or catch fire.
a. conduit
b. UTP
c. plenum
d. TSP
Which fiber optic type has a larger core, uses LEDs and is typically used in LANS
a. single mode
b. TSP
c. multimode
d. coaxial
What is the minimum category rating of UTP cabling you would need for a network that runs at 1000mbps?
a. CAT1
b. CAT2
c. CAT5e
d. CAT5
The theoretical capacity of a particular medium to carry data.
a. throughput
b. bandwidth
c. latency
d. goodput
Which of the following is the widely used medium for networking due to relatively low cost, ease of use, and fast networking speeds?
a. Coaxial Cable
b. Fiber-optic
c. Unshielded Twisted-Pair (UTP)
d. wireless
The method of converting a stream of bits into a predefined code.
a. encapsulation
b. multiplexing
c. signaling
d. encoding
The measure of the bits transferred across the media over a given period of time.
a. output
b. goodput
c. bandwidth
d. throughput
What are the 3 types of physical media?
a. fiber optic
b. wireless
c. satellite
d. copper
What four colors are used in UTP and STP wiring?
a. Brown
b. Blue
c. Green
d. Black
e. Orange
What technique is used with UTP cable to help protect against signal interference from crosstalk?
a. Twisting the wires together into pairs.
b. Wrapping a foil shield around the wire pairs.
c. Encasing the cables within a flexible plastic sheath.
d. Terminating the cable with special grounded connectors.
What are the 3 types of copper media?
(a)
The measure of the usable data transferred across the media is known as:
a. output
b. data
c. goodput
d. bandwidth
The physical layer of the OSI model of the receiving device passes bits up to which higher level layer of the OSI model?
a. network
b. presentation
c. data-link
d. application
You need to run 4 Ethernet drops that are 125 ft long in an area that has heavy manufacturing equipment and you need to select cabling that is resistance to EMI. Which of the following would you choose?
a. Cat3
b. UTP Cat5e
c. UTP Cat6
d. STP Cat5e
Which media uses microwave signals to represent bits?
a. fiber optic
b. wireless
c. copper
d. point to point
Which fiber optic cable has a very small core and is used in very long distance situations?
a. ST
b. multimode
c. SC
d. single mode
What type of media would you use for high speed backbone networks?
a. Coaxial
b. STP
c. UTP
d. Fiber optic
What is the maximum distance you can run a CAT-5e cable operating at 1,000 Mb/s speeds?
a. 100 meters
b. 55 meters
c. 528 feet
d. 100 yards
What type of interference does UTP wire suffer from when run near lighting fixtures or power conduits?
a. URI
b. EFI
c. RFI
d. EMI
The distortion of the transmitted messages from signals carried in adjacent wires is known as
(a)
What standards are used to terminate an Ethernet crossover cable?
a. One end uses the T568A standard, and one end uses the T568B standard.
b. Both ends use the T568A standard.
c. The cable ends are specified by a Cisco proprietary standard.
d. Both ends use the T568B standard.
The purpose of the OSI physical layer is
a. Exchanging frames between nodes over physical network media.
b. Transmitting bits across the local media.
c. Controlling access to media.
d. Performing error detection on received frames.
Layer 7
Session
Presentation
Application
Transport
Layer 6
Physical
Transport
Data-Link
Presentation
Layer 5
Presentation
Session
Network
Data-Link
Layer 4
Physical
Network
Application
Transport
Layer 3
Physical
Network
Session
Presentation
Layer 2
Data-Link
Application
Session
Physical
Layer 1
Session
Transport
Presentation
Physical
What TIA standards are used to terminate an Ethernet straight through cable?
a. Both ends use the T568B standard.
b. The cable ends are specified by a Cisco proprietary standard.
c. One end uses the T568A standard, and one end uses the T568B standard.
d. Both ends use the T568A standard.
What PDU is received by the physical layer for encoding and transmission?
a. segment
b. data
c. packet
d. frame
An advantage of STP over UTP is
a. STP is less susceptible to EMI
b. STP cable is smaller and more flexible
c. STP had lower attenuation
d. STP is less expensive
The shielding in STP is designed to protect the signal against __________.
a. attenuation
b. crosstalk
c. latency
d. interference
What physical device operates at the physical layer?
a. router
b. switch
c. hub
The distortion of the network signal from fluorescent lighting is known as
a. RFI
b. EMI
c. attenuation
d. crosstalk
What type of cable would you use if you need to install a network cable between two buildings that are 6 miles from each other?
a. Cat6e
b. Cat5e
c. single-mode fiber
d. multi-mode fiber
ADSL has the same download and upload speeds.
True
False
Which of the following is a wireless peer to peer network?
a. P2P
b. ad hoc
c. ethernet
d. POTS
Which of the following 802.11 standards uses MIMO?
a. 802.11b
b. 802.11ac
c. 802.11n
d. 802.11a
e. 802.11g
What type of encryption does WPA2 currently use?
a. AES
b. PSK
c. RADIUS
d. TKIP
Which of the following are advantages to using wireless?
a. easy to install
b. less expensive than wired
c. communication can be easily intercepted.
d. easy to expand
What IEEE standard does wireless follow?
a. 802.5
b. 802.11
c. 802.2
What does MIMO stand for?_
(a)
What is the data rate of a E-3 line?
a. 1.54 Mbps
b. 44.736 Mbps
c. 34.368 Mbps
What is the data rate for a T-3 line?
a. 34.368 Mbps
b. 44.736 Mbps
c. 1.54 Mbps
T1, T3, E1 and E-3 are all types of:
a. plain old telephone service
b. broadband
c. DSL
d. leased lines
What does DSL stand for?
a. Digital single line
b. Direct subscriber line
c. Digital subscriber line
d. Direct Single Line
What use is the SSID in your wireless network?
a. It is the name of your network
b. It is an authorization method
c. It is the security encryption
d. It is an authentication method.
What are the 2 radio frequencies used with 802.11 technology?
a. 900 MHz
b. 5 GHz
c. 2.4 GHz
Which of the following is (are) WAN technologies?
a. DSL
b. ISDN
c. Leased lines
d. Ethernet
Wireless technologies use ________ to carry information between devices.
a. electrical impulses
b. sound waves
c. electromagnetic waves
d. light
A packet switched network moves data in separate packets based on the destination address in each packet.
true
false
Which of the following WAN technologies uses a phone connection?
a. T1
b. DSL
c. E3
d. Frame relay
