CGS 4285 Exam 2 Practice | UPDATED Questions with
100% Verified Answers
Q1: What is the main function of the data plane of the network
layer?
A: Move packets from router inputs to appropriate outputs
Q2: Given the following forwarding table, determine the outgoing
link interface for the destination address 11001000 00010111
00011000 10101010.
A: 1
Q3: Prefix Link Interface
11001000 00010111 00010 0
11001000 00010111 00011000 1
11001000 00010111 00011 2
Otherwise 3
A:
Q4: Assume that a router interface receives two types of packets
multimedia and data. The multimedia packets are delay
sensitive and the data packets are not. Therefore, the router
interface transmits data packets only when there are not
multimedia packets in the buffer. Which scheduling mechanism
should be used?
A: Priority scheduling
Q5: In the subnet 1.2.3.4/24 represented using the CIDR notation,
how many IP addresses are available?
A: 256
Q6: If a packet needs to be sent to every host in the network,
which transmission mode should be used?
A: Broadcast
Q7: How many IPv4 addresses are available in total
approximately?
A: 4 billion
Q8: Select the header fields that can be used to define a pattern
with OpenFlow.
A: Destination IP Address, Port Number, MAC Address
, Q9: Which of the following devices can be implemented using
OpenFlow
A: Switch, Router, Firewall, NAT
Q10: Which of the following is not a reason for hierarchical routing?
A: To find shorter paths
Q11: What is the standard inter-AS routing protocol in today's
Internet?
A: BGP
Q12: Which of the following is not an advantage of SDN?
A: Scalable routing
Q13: To use the traceroute command to measure the RTT (round
trip time) between the source and the first router on the path,
what should be the TTL (time to live) value in the UDP segment
sent by traceroute?
A: 1
Q14: Which of the following is not a service provided by the link
layer?
A: Congestion Control
Q15: Using a 4-bit generator, how many bits of transmission errors
can be detected by CRC (cyclic redundancy check)?
A: 3
Q16: CSMA (carrier sensing multiple access) completely eliminates
collisions.
A: False
Q17: Identify the three categories of MAC protocols.
A: Channel Partitioning, Taking Turns, Random Access
Q18: What is the protocol to translate an IP address to a MAC
address?
A: ARP
100% Verified Answers
Q1: What is the main function of the data plane of the network
layer?
A: Move packets from router inputs to appropriate outputs
Q2: Given the following forwarding table, determine the outgoing
link interface for the destination address 11001000 00010111
00011000 10101010.
A: 1
Q3: Prefix Link Interface
11001000 00010111 00010 0
11001000 00010111 00011000 1
11001000 00010111 00011 2
Otherwise 3
A:
Q4: Assume that a router interface receives two types of packets
multimedia and data. The multimedia packets are delay
sensitive and the data packets are not. Therefore, the router
interface transmits data packets only when there are not
multimedia packets in the buffer. Which scheduling mechanism
should be used?
A: Priority scheduling
Q5: In the subnet 1.2.3.4/24 represented using the CIDR notation,
how many IP addresses are available?
A: 256
Q6: If a packet needs to be sent to every host in the network,
which transmission mode should be used?
A: Broadcast
Q7: How many IPv4 addresses are available in total
approximately?
A: 4 billion
Q8: Select the header fields that can be used to define a pattern
with OpenFlow.
A: Destination IP Address, Port Number, MAC Address
, Q9: Which of the following devices can be implemented using
OpenFlow
A: Switch, Router, Firewall, NAT
Q10: Which of the following is not a reason for hierarchical routing?
A: To find shorter paths
Q11: What is the standard inter-AS routing protocol in today's
Internet?
A: BGP
Q12: Which of the following is not an advantage of SDN?
A: Scalable routing
Q13: To use the traceroute command to measure the RTT (round
trip time) between the source and the first router on the path,
what should be the TTL (time to live) value in the UDP segment
sent by traceroute?
A: 1
Q14: Which of the following is not a service provided by the link
layer?
A: Congestion Control
Q15: Using a 4-bit generator, how many bits of transmission errors
can be detected by CRC (cyclic redundancy check)?
A: 3
Q16: CSMA (carrier sensing multiple access) completely eliminates
collisions.
A: False
Q17: Identify the three categories of MAC protocols.
A: Channel Partitioning, Taking Turns, Random Access
Q18: What is the protocol to translate an IP address to a MAC
address?
A: ARP
