Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 20
Q661:
ATM switches typically operate at which speed?
A. OC-1
B. OC-3
C. OC-5
D. OC-7
Correct Answer:
B
Chapter: 20
Q662:
What is the approximate speed of an OC-3 ATM port?
A. 45 Mbps
B. 100 Mbps
C. 155 Mbps
D. 200 Mbps
Correct Answer:
C
Chapter: 20
Q663:
What is a key disadvantage of ATM related to communication broadcast?
A. It supports multicast only
B. Broadcast is natively supported
C. Broadcast is inefficient and simulated
D. Broadcast requires encryption
Correct Answer:
C
Chapter: 20
Q664:
Which factor makes ATM expensive compared to LAN technologies?
A. Faster wiring
B. High memory capacity
C. Specialized hardware
D. Standardized protocols
Correct Answer:
C
Chapter: 20
Q665:
In ATM networks, what is the 'cell tax'?
A. Extra cost of fiber
B. Extra bandwidth used for control overhead
C. Network setup fee
D. ISP charges
Correct Answer:
B
Chapter: 20
Q666:
ATM has only minimal provision for
A. Cell compression
B. QoS guarantees
C. Interoperation with other technologies
D. Packet encryption
Correct Answer:
C
Chapter: 20
Q667:
What kind of network is owned and operated by a single organization?
A. Public network
B. Carrier network
C. Private network
D. Virtual network
Correct Answer:
C
Chapter: 20
Q668:
A private network usually includes
A. Unlimited external connections
B. No connections at all
C. One or few managed external connections
D. Global routing
Correct Answer:
C
Chapter: 20
Q669:
What do we call a set of LANs connected within a building or campus?
A. Public net
B. Extranet
C. Intranet
D. Subnet
Correct Answer:
C
Chapter: 20
Q670:
Private networks are usually operated
A. By common carriers
B. By government agencies
C. Autonomously from other networks
D. As satellite networks
Correct Answer:
C
Chapter: 20
Q671:
Who is responsible for network management in a private network?
A. ISP
B. Third-party vendor
C. Organization itself
D. Cloud provider
Correct Answer:
C
Chapter: 20
Q672:
What do organizations do when they want to extend their network across campuses?
A. Use Wi-Fi
B. Install VPNs
C. Contract leased lines from common carriers
D. Use satellite phones
Correct Answer:
C
Chapter: 20
Q673:
Which of the following is true about public networks?
A. Owned by private users
B. Each user has exclusive hardware
C. Owned by common carriers
D. Only for internet access
Correct Answer:
C
Chapter: 20
Q674:
Data on public networks is transmitted
A. Privately to each user
B. Through shared leased lines
C. Only during night
D. With manual routing
Correct Answer:
B
Chapter: 20
Q675:
Which is an advantage of public networks?
A. Expensive maintenance
B. Lack of flexibility
C. Flexibility in connectivity
D. No user access
Correct Answer:
C
Chapter: 20
Q676:
One major disadvantage of private networks is
A. No technical control
B. High cost of installation and maintenance
C. Low security
D. Shared resources
Correct Answer:
B
Chapter: 20
Q677:
Public networks usually lack
A. Users
B. Connections
C. Decision-making equipment and policies
D. Security
Correct Answer:
C
Chapter: 20
Q678:
ATM was designed to work primarily on
A. Fiber optics
B. Twisted pair
C. Wireless cables
D. Satellite cables
Correct Answer:
A
Chapter: 20
Q679:
________ packets require complicated interrupt handling to detect transmission completion.
A. Fixed-length
B. Short
C. Variable-length
D. Long
Correct Answer:
C
Chapter: 20
Q680:
Which of the following is a disadvantage of ATM?
A. It uses twisted pair
B. High broadcast efficiency
C. It is cheap
D. Excessive connection setup time
Correct Answer:
D