tech 4 to 5
21. Which tagging method supports thousands of VLANs? - ANS-802.1Q
A Class 5 office connects individual subscribers to the telephone network and is also referred to
as:
End Office
Central Office
Local Office
All of the above - ANS-All of the above
A dedicated CO circuit that links two points is referred to as a: - ANS-Tie Line
A frame relay network uses fewer lines to connect 10 locations than a T1 mesh, and is therefore
more cost effective. True or False? - ANS-True
A line that goes from a customer's site through a CO to a remote CO in another part of the
country is known as a: - ANS-FX line
A NIC is a device used for: - ANS-Signaling
A Ping command uses which ICMP message types? (Choose two.) - ANS-Echo Request
Echo Reply
A sound card is what general type of computer component? - ANS-All the Above
A sound card is what general type of computer component? - ANS-Input/Output
An Application Layer utility transmits network administration and control messages between
nodes. It must not use any more of the network's bandwidth than absolutely necessary. If
messages are corrupted or lost, the utility handles retransmission, so it doesn't need this service
from the lower layers. This application should use the services of: - ANS-UDP
An Ethernet LAN that uses UTP cabling and a hub as the physical medium is referred to as
which of the following? - ANS-Star
An MG consists of which two components? (Choose two.) - ANS-Endpoints
Connections
Analog signals on copper cable can be distorted by:
Magnetic fields
Alternating current fields
Radio waves
All of the above - ANS-All of the above
At what OSI model layer does DiffServ operate? - ANS-Layer 3
At what point does end-to-end delay in a voice conversation become unacceptable? -
ANS-When it approaches 500 ms
At which OSI layer do bridges operate? - ANS-Data Link Layer
At which OSI layer do routers operate? - ANS-Network Layer
At which OSI layer do switches reside? - ANS-Data Link Layer
At which points in a one-way, multiple hop, end-to-end IP communications session will a frame
have to be built? (Choose two.) - ANS-At each hop's router outbound port
, At the sending host's LAN port
ATM requires fiber media to run. True or False? - ANS-False
Bridges are needed in which of the following situations? - ANS-Too much traffic on the LAN
Remote connection of two LANs over a WAN link
Can switches switch two frames simultaneously? - ANS-Yes
Central offices are connected to which of the following:
Class 4 offices
Other central offices
Individual subscribers
All of the above - ANS-All of the above
Collisions are normal on CSMA/CD LANs and not usually the result of errors. True or False? -
ANS-True
Each wire of a local loop is sometimes referred to as: - ANS-Tip and Ring
Ethernet operates at all speeds except which of the following? - ANS-16 Kbps
Frame headers and packet headers contain addresses. True or False? - ANS-True
How are bits represented on fiber optic cable? - ANS-Pulses (on/off) of light
How does DHCP pass configuration information to TCP/IP hosts? - ANS-The option codes
How large is the IP version 4 address field? - ANS-32 bits
How many 802.1p header bits identify the frame's priority, and how many frame classes does
the standard define? - ANS-3, 8
How many unique addresses are supported by IP version 6? - ANS-2^128
How many wire pairs can be terminated on a 66 block? - ANS-25-50
Hubs and repeaters operate at which layer of the OSI model? - ANS-Physical Layer
In a Class A Internet address, which of the following network numbers are reserved? (Choose
all that apply) - ANS-0
127
In the IP address 128.18.72.24:80, what does the number 80 represent? - ANS-The TCP or
UDP port number
M1L5 When is UTP cable preferred over STP? - ANS-When there is electrical interference
M6L5 When a CO switch provides a business telephone switching services, it is referred to as: -
ANS-Centrex
M8L1 What should you use to inspect the IP address of a Windows operating system PC? -
ANS-IPconfig
MGCP is also known as what type of protocol? - ANS-Master/slave
Performance will likely increase in an Ethernet network when which of the following occurs? -
ANS-Hubs are replaced by switches.
QSIG supports which of the following ISDN supplementary services? (Choose three.) -
ANS-Call transfer
Calling party identification
Generic functions
21. Which tagging method supports thousands of VLANs? - ANS-802.1Q
A Class 5 office connects individual subscribers to the telephone network and is also referred to
as:
End Office
Central Office
Local Office
All of the above - ANS-All of the above
A dedicated CO circuit that links two points is referred to as a: - ANS-Tie Line
A frame relay network uses fewer lines to connect 10 locations than a T1 mesh, and is therefore
more cost effective. True or False? - ANS-True
A line that goes from a customer's site through a CO to a remote CO in another part of the
country is known as a: - ANS-FX line
A NIC is a device used for: - ANS-Signaling
A Ping command uses which ICMP message types? (Choose two.) - ANS-Echo Request
Echo Reply
A sound card is what general type of computer component? - ANS-All the Above
A sound card is what general type of computer component? - ANS-Input/Output
An Application Layer utility transmits network administration and control messages between
nodes. It must not use any more of the network's bandwidth than absolutely necessary. If
messages are corrupted or lost, the utility handles retransmission, so it doesn't need this service
from the lower layers. This application should use the services of: - ANS-UDP
An Ethernet LAN that uses UTP cabling and a hub as the physical medium is referred to as
which of the following? - ANS-Star
An MG consists of which two components? (Choose two.) - ANS-Endpoints
Connections
Analog signals on copper cable can be distorted by:
Magnetic fields
Alternating current fields
Radio waves
All of the above - ANS-All of the above
At what OSI model layer does DiffServ operate? - ANS-Layer 3
At what point does end-to-end delay in a voice conversation become unacceptable? -
ANS-When it approaches 500 ms
At which OSI layer do bridges operate? - ANS-Data Link Layer
At which OSI layer do routers operate? - ANS-Network Layer
At which OSI layer do switches reside? - ANS-Data Link Layer
At which points in a one-way, multiple hop, end-to-end IP communications session will a frame
have to be built? (Choose two.) - ANS-At each hop's router outbound port
, At the sending host's LAN port
ATM requires fiber media to run. True or False? - ANS-False
Bridges are needed in which of the following situations? - ANS-Too much traffic on the LAN
Remote connection of two LANs over a WAN link
Can switches switch two frames simultaneously? - ANS-Yes
Central offices are connected to which of the following:
Class 4 offices
Other central offices
Individual subscribers
All of the above - ANS-All of the above
Collisions are normal on CSMA/CD LANs and not usually the result of errors. True or False? -
ANS-True
Each wire of a local loop is sometimes referred to as: - ANS-Tip and Ring
Ethernet operates at all speeds except which of the following? - ANS-16 Kbps
Frame headers and packet headers contain addresses. True or False? - ANS-True
How are bits represented on fiber optic cable? - ANS-Pulses (on/off) of light
How does DHCP pass configuration information to TCP/IP hosts? - ANS-The option codes
How large is the IP version 4 address field? - ANS-32 bits
How many 802.1p header bits identify the frame's priority, and how many frame classes does
the standard define? - ANS-3, 8
How many unique addresses are supported by IP version 6? - ANS-2^128
How many wire pairs can be terminated on a 66 block? - ANS-25-50
Hubs and repeaters operate at which layer of the OSI model? - ANS-Physical Layer
In a Class A Internet address, which of the following network numbers are reserved? (Choose
all that apply) - ANS-0
127
In the IP address 128.18.72.24:80, what does the number 80 represent? - ANS-The TCP or
UDP port number
M1L5 When is UTP cable preferred over STP? - ANS-When there is electrical interference
M6L5 When a CO switch provides a business telephone switching services, it is referred to as: -
ANS-Centrex
M8L1 What should you use to inspect the IP address of a Windows operating system PC? -
ANS-IPconfig
MGCP is also known as what type of protocol? - ANS-Master/slave
Performance will likely increase in an Ethernet network when which of the following occurs? -
ANS-Hubs are replaced by switches.
QSIG supports which of the following ISDN supplementary services? (Choose three.) -
ANS-Call transfer
Calling party identification
Generic functions
