Routing and Switching MCQs with Answers
Practice important Routing and Switching MCQs with answers and explanations.
Chapter: 23
Q241:
What does the network layer use to identify end devices on the network?
A. Unique IP address
B. Host name
C. MAC address
D. Port number
Correct Answer:
A
Chapter: 23
Q242:
Fill in the blank: In the network layer, the process of adding IP header information to a PDU is called ________.
A. Encapsulation
B. Decapsulation
C. Transmission
D. Segmentation
Correct Answer:
A
Chapter: 23
Q243:
Which process involves removing headers from lower layers at the destination host?
A. De-encapsulation
B. Encapsulation
C. Routing
D. Addressing
Correct Answer:
A
Chapter: 23
Q244:
What is the primary function of a router in the network layer?
A. To select paths and direct packets to the destination host
B. To manage the flow of packets between processes
C. To establish connections between end devices
D. To provide end-to-end error detection
Correct Answer:
A
Chapter: 23
Q245:
Fill in the blank: A packet may cross many ________ before reaching the destination host.
A. hops
B. cycles
C. paths
D. routers
Correct Answer:
A
Chapter: 23
Q246:
Which of the following is a commonly implemented network layer protocol?
A. Internet Protocol version 4 (IPv4)
B. Novell Internetwork Packet Exchange (IPX)
C. AppleTalk
D. Connectionless Network Service (CLNS/DECNet)
Correct Answer:
A
Chapter: 23
Q247:
Fill in the blank: The process of encapsulating data at the network layer results in a ________ when header information is added.
A. packet
B. frame
C. segment
D. datagram
Correct Answer:
A
Chapter: 23
Q248:
Which characteristic of IP means that it does not establish a connection before sending data packets?
A. Connectionless
B. Best Effort
C. Media Independent
D. Segmented
Correct Answer:
A
Chapter: 23
Q249:
Fill in the blank: IP is designed to provide only the functions necessary to deliver a packet from a source to a ________.
A. destination
B. host
C. switch
D. router
Correct Answer:
A
Chapter: 23
Q250:
What does "Best Effort" mean in the context of IP protocol?
A. Packet delivery is not guaranteed
B. All packets are delivered reliably
C. Connections are established before sending packets
D. IP tracks and manages packet flow
Correct Answer:
A
Chapter: 23
Q251:
Which of the following is NOT a characteristic of IP?
A. Connectionless
B. Best Effort
C. Media Independent
D. Connection-oriented
Correct Answer:
C
Chapter: 23
Q252:
What happens during de-encapsulation at the network layer?
A. The IP header is added to the PDU
B. The IP header is removed from the packet
C. The packet is routed to the destination host
D. The PDU is converted into a frame
Correct Answer:
B
Chapter: 23
Q253:
Fill in the blank: The network layer protocols are primarily responsible for specifying the ________ used to carry data between hosts.
A. packet structure
B. connection type
C. session management
D. data encoding
Correct Answer:
A
Chapter: 24
Q254:
What are the two main parts of an IPv4 packet?
A. IP Header and Payload
B. Header and Data
C. Header and Segment
D. Data and Payload
Correct Answer:
A
Chapter: 24
Q255:
What does the Version field in the IPv4 header identify?
A. The IP packet version
B. The payload type
C. The source IP address
D. The destination IP address
Correct Answer:
A
Chapter: 24
Q256:
Fill in the blank: The Differentiated Services (DS) field was formerly known as the ________ field.
A. Type of Service (ToS)
B. Version Information
C. Protocol Type
D. TTL Field
Correct Answer:
A
Chapter: 24
Q257:
Which field in the IPv4 header helps determine the priority of each packet?
A. Differentiated Services (DS)
B. Time-to-Live (TTL)
C. Protocol
D. Source IP Address
Correct Answer:
A
Chapter: 24
Q258:
Fill in the blank: The Protocol field in the IPv4 header indicates the type of ________ that the packet is carrying.
A. data payload
B. IP address
C. header
D. TTL value
Correct Answer:
A
Chapter: 24
Q259:
What is the function of the Time-to-Live (TTL) field in an IPv4 packet?
A. To limit the lifetime of a packet and prevent routing loops
B. To specify the type of data in the packet
C. To determine the priority of the packet
D. To indicate the packet version
Correct Answer:
A
Chapter: 24
Q260:
Fill in the blank: If the TTL field in an IPv4 packet decrements to zero, the router will ________.
A. discard the packet and send an ICMP Time Exceeded message to the source address
B. forward the packet to the next hop
C. reduce the TTL value and forward the packet
D. update the source IP address
Correct Answer:
B