NET-CENTRIC COMPUTING FINAL EXAM UPDATED
ACTUAL QUESTIONS AND CORRECT ANSWERS
Question:
1. What is the main function of the data plane of the network layer?
1. Scan packets to detect security threats
2. Ensure reliable delivery of packets
3. Determine route taken by packets from source to destination
4. Move packets from router inputs to appropriate outputs
Answer:
Move packets from router inputs to appropriate outputs
Question:
2. If a packet needs to be sent to every host in the network, which transmission mode should be used?
1. Broadcast
2. Multicast
3. Unicast
4. Anycast
Answer:
Broadcast
Question:
3. In the subnet 1.2.3.4/24 represented using the CIDR notation, how many IP addresses are available?
1. 256
2. 8
3. 1024
4. 24
Answer:
256
Question:
4. Which of the following header fields cannot be used to define a pattern in OpenFlow?
1. Destination IP address
2. Destination port number
3. Destination MAC address
4. Destination domain name
Answer:
Destination Domain Name
Question:
5. In the abstraction of a network, routers are represented as vertices, and links are represented as edges.
Which of the following is not a good choice for the cost of a link?
1. Type of transmission media
2. Queue length
3. Delay
4. Distance
, Answer:
Type of transmission media
Question:
6. What is not a reason for hierarchical routing?
1. To reduce routing table size
2. To make the internet easier to manage.
3. To fin shorter paths
4. To make the Internet more scalable
Answer:
To find shorter paths
Question:
7. What is the standard inter-AS routing protocol in the Internet?
1. BGP
2. RIP
3. OSPF
4. EIGRP
Answer:
BGP
Question:
8. Software-defined networking (SDN) implements a logically _____ control plane.
Answer:
centralized
Question:
9. What is not an advantage of SDN?
1. Open implementation of control plane
2. Ability to program routers
3. Scalable routing
4. easer network management
Answer:
Scalable routing
Question:
10. What are the three components of SDN?
1. Control applications
2. SDN controller
3. Network database
4. Data plane switches
Answer:
Control Applications, SDN controller, data plane switches
Question:
11. The traceroute command sends a sequence of packets with incremented TTL values. For the packet
with a TTL value of n, when the n-th router on the path receives the packet, it will send a ICMP response
with type _____ and code _____
ACTUAL QUESTIONS AND CORRECT ANSWERS
Question:
1. What is the main function of the data plane of the network layer?
1. Scan packets to detect security threats
2. Ensure reliable delivery of packets
3. Determine route taken by packets from source to destination
4. Move packets from router inputs to appropriate outputs
Answer:
Move packets from router inputs to appropriate outputs
Question:
2. If a packet needs to be sent to every host in the network, which transmission mode should be used?
1. Broadcast
2. Multicast
3. Unicast
4. Anycast
Answer:
Broadcast
Question:
3. In the subnet 1.2.3.4/24 represented using the CIDR notation, how many IP addresses are available?
1. 256
2. 8
3. 1024
4. 24
Answer:
256
Question:
4. Which of the following header fields cannot be used to define a pattern in OpenFlow?
1. Destination IP address
2. Destination port number
3. Destination MAC address
4. Destination domain name
Answer:
Destination Domain Name
Question:
5. In the abstraction of a network, routers are represented as vertices, and links are represented as edges.
Which of the following is not a good choice for the cost of a link?
1. Type of transmission media
2. Queue length
3. Delay
4. Distance
, Answer:
Type of transmission media
Question:
6. What is not a reason for hierarchical routing?
1. To reduce routing table size
2. To make the internet easier to manage.
3. To fin shorter paths
4. To make the Internet more scalable
Answer:
To find shorter paths
Question:
7. What is the standard inter-AS routing protocol in the Internet?
1. BGP
2. RIP
3. OSPF
4. EIGRP
Answer:
BGP
Question:
8. Software-defined networking (SDN) implements a logically _____ control plane.
Answer:
centralized
Question:
9. What is not an advantage of SDN?
1. Open implementation of control plane
2. Ability to program routers
3. Scalable routing
4. easer network management
Answer:
Scalable routing
Question:
10. What are the three components of SDN?
1. Control applications
2. SDN controller
3. Network database
4. Data plane switches
Answer:
Control Applications, SDN controller, data plane switches
Question:
11. The traceroute command sends a sequence of packets with incremented TTL values. For the packet
with a TTL value of n, when the n-th router on the path receives the packet, it will send a ICMP response
with type _____ and code _____
