Final Quiz Questions and Answers | Môn Computer Network - Trường Đại học Quốc tế, Đại học Quốc gia Thành phố Hồ Chí Minh

lOMoAR cPSD| 23136115
Computer Network – Final Quiz
1. What is the primary funcon of the 2. What is the advantage of using SDN data
plane in the network layer? in network layer management? a) Forwarding packets
between a) Limited scalability and flexibility network devices
b) Higher latency and slower data
b) Establishing connecons between transmission hosts
c) Increased physical network devices c) Managing network resources required.
Simplified network management d) Implemenng network
security d) and configuraon protocols
3. Which of the following devices 4. What is the drawback of the link operates
at the data plane in the state roung algorithm? network layer?
a) It requires frequent updates due to
a) Router its dynamic nature.
b) Switch b) It is suscepble to roung loops and c) Hub count-to-infinity issues.
d) Firewall c) It is less scalable for large networks. d) It does not support route summarizaon.
5. Which protocol is commonly used 6. Which of the following is a benefit for
control plane communicaon of SDN in terms of network between network devices? scalability?
a) Internet Protocol (IP) a) It limits the number of devices that
b) Border Gateway Protocol (BGP) can be connected to the network. c) Simple Network
Management b) It requires manual configuraon of Protocol (SNMP) network devices.
d) Transmission Control Protocol (TCP)
c) It allows for easy addion and
removal of network devices.
7. Which of the following is NOT an c) Roung Informaon Protocol (RIP)
example of a control plane protocol d) Internet Control Message Protocol
used for roung in the Internet?
d) It increases network complexity
a) OSPF (Open Shortest Path First)
8. What is the drawback of the distance
b) Border Gateway Protocol (BGP)
vector roung algorithm? lOMoAR cPSD| 23136115
a) It requires frequent updates due to its dynamic nature.
b) It is suscepble to roung loops and
count-to-infinity issues.
c) It is less scalable for large networks. lOMoAR cPSD| 23136115 d) It does not support route summarizaon.
9. Which protocol operates at the 10. What is the purpose of interfaces in
network layer to deliver packets a router? across different networks? a) To
provide physical connecvity to
a) IP (Internet Protocol) network devices
b) TCP (Transmission Control Protocol)
b) To perform packet forwarding and
c) ICMP (Internet Control Message roung decisions Protocol)
c) To store configuraon files and
d) ARP (Address Resoluon Protocol) roung tables
d) To manage the router's operang system and control plane processes 11.
What is the main concept behind 12. What is tunneling in the context of SDN? IPv6 transion?
a) Centralized control and a) Translang IPv6 addresses to IPv4 programmability
of network addresses. infrastructure b) Encapsulang IPv6 packets within b)
Decentralized control and manual IPv4 packets for transport across configuraon
of network devices IPv4 networks
c) Hardware-based networking c) Assigning temporary IPv6 addresses without
soware abstracon to devices during the transion d) Decentralized control and period.
programmability of network d) Allocang IPv6 addresses to IPv4infrastructure only devices.
13. ICMP is closely associated with 14. Which component of a router is which
protocol? responsible for processing and
a) IP (Internet Protocol) forwarding data packets?
b) TCP (Transmission Control Protocol) a) Roung Processor
c) UDP (User Datagram Protocol) b) Roung Logic
d) HTTP (Hypertext Transfer Protocol) c) Switching Fabric d) Forwarding Processor lOMoAR cPSD| 23136115
15. What is the structure of an IPv4 a) By broadcasng the informaon to all address? routers in the network
a) Network poron and host poron
b) By mulcasng the informaon to b) Prefix and suffix
specific routers in the network
c) By sending the informaon directly
16. How does a router share its link
state informaon in the link state
By flooding the informaon to all roung algorithm?
routers in the network. c) Subnet mask and subnet ID to neighboring routers d) Class and network ID. d)
17. What informaon does a router 18. How does a router share its roung
maintain in the link state database table informaon in the distance in the link
state roung algorithm? vector roung algorithm?
a) Roung table entries a) By broadcasng the informaon to
b) Hop count to desnaon networks. all routers in the network
c) Neighbor router informaon b) By mulcasng the informaon to
d) Topology informaon of the enre specific routers in the network network
c) By sending the informaon directly to neighboring routers
d) By flooding the informaon to all routers in the network
19. Which of the following is a 20. What is the disadvantage of using characterisc
of the data plane in NAT? the network layer?
a) It may increase network latency.
a) It determines the opmal path for b) It weakens network security. packet delivery.
c) It requires addional network
b) It manages network resources and infrastructure.
bandwidth allocaon. d) All of above.
c) It enforces security policies and access control. lOMoAR cPSD| 23136115
d) It focuses on the efficient forwarding of packets.
21. What is the advantage of using the 22. What is the purpose of the subnet
link state roung algorithm over the mask in an IPv4 address?
distance vector roung algorithm?
a) To idenfy the network poron of
a) It has lower memory and processing the address. requirements.
b) It is easier to implement and b) To idenfy the host poron of the configure. address
c) It provides faster convergence in c) To determine the class of the address
large networks. d) To provide security for the network
d) It is more suitable for stable network topologies.
23. Which protocol is commonly used in 24. Which classful address range is SDN
to communicate between the reserved for mulcast addresses? control plane
and data plane? a) Class A
a) Border Gateway Protocol (BGP) b) Class B b) OpenFlow. c) Class C
c) Transmission Control Protocol (TCP) d) Class D.
d) Internet Control Message Protocol (ICMP)
25. What is the advantage of using the 26. Which field in the IPv4 header is
distance vector roung algorithm used for fragmentaon and over the link state
roung reassembly of packets? algorithm? a) Source IP address
a) It converges more quickly in large b) Desnaon IP
address networks. c) Datagram length b) It requires less memory
and d) Idenfier. processing resources.
c) It provides more accurate network topology informaon.
d) It supports more advanced roung features. lOMoAR cPSD| 23136115
27. How does a router calculate the 28. Which IPv4 address range is shortest
path to a desnaon in the reserved for private networks? link state roung
algorithm? a) 10.0.0.0 - 10.255.255.255
a) By comparing the hop count to the b) 172.16.0.0 - 172.31.255.255 desnaon network
c) 192.168.0.0 - 192.168.255.255
b) By using the Bellman-Ford algorithm d) All of the above.
c) By running Dijkstra's algorithm on the link state database.
d) By consulng the roung table entries 29. Which of the following is
a 30. Which roung algorithm is
based on limitaon of SDN in the network the concept of link- state layer? informaon?
a) Reduced network performance and a) Distance Vector Roung Algorithm
increased latency b) Link State Roung Algorithm b) Inability to handle
large-scale c) Border Gateway Protocol (BGP) networks.
d) Open Shortest Path First (OSPF) c) Limited support for
Dependency on a centralize d network virtualizaon
controller can be a single point of failure. d)
31. Which statement about NAT is true? 32. Which of the following is an
a) NAT is not compable with firewalls. example of an SDN controller?
b) NAT can translate IP addresses a) OpenVPN between different
network b) Wireshark protocols. c) OpenDaylight. lOMoAR cPSD| 23136115
c) NAT can only be used in small d) Cisco IOS networks, not large-scale
NAT can only translate IPv4d eployments.
addresses, not IPv6 addresses. d)
33. What is the role of the OpenFlow 34. How is an IPv4 address writen?
protocol in SDN? a) In binary format
a) It provides encrypon and security b) In hexadecimal
format for network traffic. c) In octal format
b) It enables communicaon between d) In decimal format
with dot-decimal the SDN controller and network notaon devices.
c) It establishes connecons between hosts in different networks.
d) It handles the physical connecvity between network devices
35. How does SDN improve network 36. What is the control plane in agility in
the network layer? computer networking?
a) It increases network complexity and a) The part of the network responsible
management overhead. for forwarding data packets
b) It allows for rapid deployment and b) The part of the network responsible
reconfiguraon of network for controlling and managing services. network devices
c) It limits the flexibility of network c) The part of the network responsible
infrastructure. for encrypng network traffic
d) It requires manual configuraon of d) The part of the network responsible
network devices. for roung network traffic
37. Which statement about ICMP is 38. Which control plane funcon correct?
involves exchanging roung a) ICMP messages are always sent in informaon
between network response to specific events. devices? lOMoAR cPSD| 23136115
b) ICMP messages are transported over a) Network monitoring TCP.
b) Network configuraon c) ICMP provides reliable data
transfer. c) Roung table updates
d) ICMP messages are always sent in d) Quality of Service (QoS) response to
specific events. management
39. Which of the following is an 40. In a network layer, what is the example of
an addressing scheme purpose of Quality of Service (QoS) used in the
network layer? mechanisms?
a) IPv4 (Internet Protocol version 4) a) To priorize certain types of
b) HTTP (Hypertext Transfer Protocol) network traffic c) DNS (Domain Name System)
b) To encrypt data packets for secure
d) FTP (File Transfer Protocol) transmission
c) To establish connecons between
41. What is the maximum number of hosts
unique IPv4 addresses?
d) To prevent unauthorized access to a) 1 million the network b) 4 billion
42. How does the switching fabric c) 16 million
impact the performance of a router?
a) It provides physical connecvity to network devices.
d) 256 million b) It manages and controls the router's operang system.
c) It determines the maximum
throughput and latency of the router.
d) It handles packet forwarding and roung decisions.
43. What is the main advantage of using 44. Which ICMP message type is used to
IPv6 transion mechanisms?
test the reachability of a host or lOMoAR cPSD| 23136115
a) They allow for a seamless transion network (i.e. ping)?
from IPv4 to IPv6 with minimal a) Echo Request. effort. b) Desnaon Unreachable
b) They enable communicaon c) Time Exceeded
between IPv4 and IPv6 networks d) Redirect
without the need for any changes to network infrastructure.
c) They provide enhanced security features compared to IPv4.
d) They eliminate the need for dualstack implementaon.
45. Which statement about BGP is 46. Which of the following is a correct?
characterisc of the distance vector
a) It is a protocol used within a single roung algorithm? autonomous system (AS)
a) It converges quickly in large
b) It is a protocol used for roung networks.
within a local area network (LAN)
b) It does not require periodic updates.
c) It is a protocol used for roung c) It is less resource-intensive within a wide
area network (WAN) compared to link state roung.
d) It is a protocol used for roung d) It is more suitable for stable between
different autonomous network topologies. systems (AS)
47. Which of the following is NOT a 48. How does IPv6 handle the issue of funcon
of the control plane? Network Address Translaon (NAT) a) Network device configuraon in IPv4? b) Roung table updates
a) It uses a similar NAT mechanism as
c) Data packet forwarding IPv4. d) Network monitoring and
b) It does not address the issue of NAT. management
c) It restricts the use of NAT in IPv6 networks.
d) It eliminates the need for NAT by providing a large address space lOMoAR cPSD| 23136115
49. What is the structure of an IPv6 50. Which of the following is a address?
characterisc of the link state
a) Network poron and host poron roung algorithm? b) Prefix and suffix
a) It converges quickly in large
c) Subnet mask and subnet ID networks
d) Class and network ID b) It does not require periodic updates. c) It is
less resource-intensive compared to distance vector roung. d) It is more suitable for small networks.
51. What are the main components of a 52. Which network device is router?
responsible for hosng the control a) Roung Processor, Roung Logic, plane funcons in a computer Input, Output network?
b) Roung Processor, Switching Fabric, a) Modem Input, Output b) Switch c) Forwarding
Processor, Switching c) Router Fabric, Input, Output d) Firewall
d) Forwarding Processor, Roung Logic, Input, Output
53. ICMP is a protocol used for
54. What is the purpose of Network a) Transporng data packets
Address Translaon (NAT) in IPv4?
b) Establishing network connecons a) To encrypt and secure IPv4 traffic. c) Error reporng
and diagnosc b) To route IPv4 packets between messages networks
d) Network address translaon (NAT) c) To assign unique IP addresses to devices within a network
d) To translate private IP addresses to
public IP addresses for internet connecvity lOMoAR cPSD| 23136115
56. What is the funcon of ICMP 57. Which component of a network (Internet
Control Message Protocol) device is responsible for execung in the network
layer? control plane funcons?
To report errors and provid a)
e a) Network interface card (NIC)
b) Central processing unit (CPU) diagnosc informaon
b) To establish connecons between c)
Random Access Memory (RAM) hosts d) Switching Fabric
c) To translate IP addresses into physical addresses
d) To route packets between networks 58. Which device is
typically 59. What is the default subnet mask for
responsible for performing NAT? a Class C IPv4 address? a) Modem a) 255.0.0.0 b) Hub b) 255.255.0.0
c) Switch c) 255.255.255.0
d) Router d) 255.255.255.255
60. Which roung algorithm is based on 62. What does a router do in the the
concept of exchanging roung network layer?
informaon between neighboring a) Forwards packets based on routers? desnaon IP addresses.
a) Distance Vector Roung Algorithm b) Translates IP addresses into physical
b) Link State Roung Algorithm addresses.
c) Border Gateway Protocol (BGP) c) Establishes connecons between
d) Open Shortest Path First (OSPF) hosts.
d) Filters and blocks malicious network
63. What is the primary reason for the traffic. development of IPv6?
a) Exhauson of IPv4 addresses
64. What does SDN stand for? b) Faster roung protocols lOMoAR cPSD| 23136115
a) Soware-Defined Networking c) Soware-Definion Network b) Soware-Designed Networking
c) Enhanced security features d) Soware-Distributed Networking
d) Improved quality of service (QoS)
65. Which statement about the link 66. Which of the following is NOT a state
roung algorithm is correct? switching technique used in a
a) It is a distance-vector-based roung router? algorithm. a) Shared Memory
b) It uses only the hop count as the b) Bus metric for path selecon. c) Interconnecon Network
c) It requires routers to periodically d) Token broadcast their roung tables.
It provides a more accurate
representaon of network topology
than distance vector roung algorithms. d)
67. How is an IPv6 address writen?
68. Which layer of the OSI model a) In binary format
corresponds to the network layer?
b) In hexadecimal format a) Layer 1 c) In octal format b) Layer 2
d) In decimal format with dot-decimal c) Layer 3 notaon d) Layer 4
69. How many bits are used to 70. ICMP stands for represent an IPv4 address? a) Internet Configuraon and
a) 32 Management Protocol
b) 64 b) Internet Communicaon Monitoring c) 128 Protocol d) 256
c) Internet Connecon Management lOMoAR cPSD| 23136115 Protocol
d) Internet Control Message Protocol
71. What is the purpose of the Address 72. Which statement about Stac NAT
Resoluon Protocol (ARP) in IPv4? is correct?
a) To map IP addresses to MAC a) It allows for one-to-many IP address addresses translaon.
b) To route IPv4 packets between b) It dynamically assigns IP addresses to networks hosts.
c) To assign unique IP addresses to c) It is commonly used for small devices within a network networks.
d) To translate private IP addresses to d) It provides beter network security
public IP addresses for internet than Dynamic NAT connecvity
73. Which algorithm is used by routers 74. Which protocol is commonly used to
determine the shortest path in for control plane communicaon in the
distance vector roung a Border Gateway Protocol (BGP) algorithm? environment?
a) Bellman-Ford algorithm
a) TCP (Transmission Control Protocol)
b) Dijkstra's algorithm b) UDP (User Datagram Protocol)
c) Floyd-Warshall algorithm c) ICMP (Internet Control Message d) Prim's algorithm Protocol) d) SNMP (Simple Network Management Protocol)
75. How does the link state roung 76. Which protocol is commonly used
algorithm handle network changes
for the dynamic allocaon of IPv4 or failures? addresses?
a) By sending periodic updates to all a) Internet Protocol Security (IPSec) routers in the network
b) Internet Control Message Protocol
b) By recalculang the shortest path (ICMP) using Dijkstra's algorithm. c)
Dynamic Host Configuraon lOMoAR cPSD| 23136115
c) By adjusng the hop count to Protocol (DHCP). affected networks d) Border Gateway Protocol (BGP)
d) By iniang a roung table update process.