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Question
A codec ________.A) encodes voice sounds into digital signals for transmission
B) encodes voice sounds into analog signals for transmission
C) encrypts the signal
D) converts binary voice signals into digital signals for transmission
Answer
This answer is hidden. It contains 1 characters.
Related questions
Q:
WAN optimization provides ________.
A) network protocol acceleration
B) caching
C) both A and B
D) neither A nor B
Q:
MPLS is ________ the source and destination hosts.
A) transparent to
B) nontransparent to
C) apparent to
D) a burden on
Q:
MPLS routers base their decisions on a packet's ________.
A) destination IP address
B) label number
C) both A and B
D) neither A nor B
Q:
MPLS ________ the work that each router must do to deliver a packet during a traffic exchange.
A) reduces
B) increases
C) does not affect
D) occasionally reduces
Q:
In MPLS, the router interface to send the packet back out will be decided ________.
A) during the router's routing process
B) before the packet arrives
C) by a dynamic routing protocol
D) none of the above
Q:
To connect two sites at 2.8 Mbps, I would use ________.
A) a T1 line
B) bonded T1 lines
C) a T2 line
D) a T3 line
Q:
Which lines run from one customer premise to another?
A) leased lines
B) access lines
C) both A and B
D) neither A nor B
Q:
Which of the following affects what throughput an individual user will receive?
A) being in a moving car
B) being far from the cellsite
C) both A and B
D) neither A nor B
Q:
Today's dominant cellular technology is ________.
A) LTE
B) 3G
C) HSPA+
D) MTSO
Q:
In cellular technology, the carrier antenna and equipment to which mobile customers connect directly is called a(n) ________.
A) cell
B) cellsite
C) MTSO
D) wireline carrier
Q:
In cellular technology, a ________ is a small geographical area.
A) cell
B) cellsite
C) both A and B
D) neither A nor B
Q:
Two-way amplifiers are needed for cable ________ service.
A) television
B) data
C) both A and B
D) neither A nor B
Q:
For ADSL service, which of the following typically must be added to the telephone system?
A) a DSLAM
B) a transmission line to the customer premises
C) both A and B
D) neither A nor B
Q:
DSL residential service provides ________.
A) symmetric speed
B) asymmetric speed
C) both A and B
D) neither A nor B
Q:
In the telephone system, the lines that connect customers to the nearest switch are called the ________.
A) access lines
B) local lines
C) access loop
D) local loop
Q:
How do WAN carriers typically get their trunk lines?
A) They construct them.
B) They lease them from telephone companies.
C) They use wireless transmission.
D) They use the Internet.
Q:
Which of the following allows you to connect to the hosts of almost any corporation today?
A) carrier WANs
B) the Internet
C) both A and B
Q:
A WAN is the network that ________.
A) links different sites together
B) provides service within about a mile
C) provides service within a site
D) all of the above
Q:
To see if a target host can be reached, you normally would send it an ICMP ________ message.
A) echo request
B) error advisement
C) either A or B
D) neither A nor B
Q:
________ is an interior dynamic routing protocol.
A) OSPF
B) BGP
C) both A and B
D) neither A nor B
Q:
Which of the following can route non-IP packets?
A) OSPF
B) EIGRP
C) both A and B
D) neither A nor B
Q:
The part of an IPv6 global unicast address that designates the host is called the ________.
A) host part
B) interface ID
C) routing prefix
D) none of the above
Q:
The routing prefix in IPv6 is like the ________ part in an IPv4 address.
A) network
B) subnet
C) host
D) both A and B
Q:
IPsec is used for ________ VPNs.
A) remote-access
B) site-to-site
C) both A and B
D) neither A nor B
Q:
Which of the following would be an SNMP object?
A) number of rows in routing table
B) a managed switch
C) both A and B
D) neither A nor B
Q:
A company receives its domain name from ________.
A) IETF
B) its ISP
C) a domain registrar
D) its parents
Q:
How many DNS root servers are there?
A) 1
B) 2
C) 10
D) 13
Q:
".edu" is a ________.
A) root domain
B) top-level domain
C) second-level domain
D) none of the above
Q:
Which of the following is a private IP address range?
A) 10.x.x.x
B) 128.171.x.x
C) both A and B
D) neither A nor B
Q:
You have a 20-bit network part and a 4-bit subnet part. How many hosts can you have per subnet?
A) 14
B) 16
C) 254
D) none of the above