WorksheetsCN UNIT 3: NETWORK LAYER QUIZ
Total questions: 40
Worksheet time: 20hrs 0mins
Given the IPv4 address 192.168.10.25/26, what is the subnet mask?
255.255.255.0
255.255.255.128
255.255.255.192
255.255.255.224
For the IPv4 address 172.16.35.120/20, what is the network address?
172.16.32.0
172.16.35.0
172.16.16.0
172.16.48.0
Given the IP address 192.168.2.31/24, what is the broadcast address of this subnet?
192.168.2.0
192.168.2.31
192.168.2.255
192.168.2.1
A small organization has been allocated a block of IP addresses. One of the addresses in this block is 205.16.37.39/28. Determine the first address of this block.
205.16.37.32
205.16.37.31
205.16.37.33
205.16.37.34
A small organization has been allocated a block of IP addresses. One of the addresses in this block is 205.16.37.39/28. Find the last address of this block.
205.16.37.48
205.16.37.31
205.16.37.47
205.16.37.34
A block of IP addresses is given as 200.17.21.128/27. According to the CIDR rules: the first address in the block is obtained by setting the last (32 − n) bits to 0, and the last address is obtained by setting the last (32 − n) bits to 1. What are the first and last addresses of this block?
First: 200.17.21.129 Last: 200.17.21.158
First: 200.17.21.128 Last: 200.17.21.159
First: 200.17.21.127 Last: 200.17.21.160
First: 200.17.21.130 Last: 200.17.21.157
Which of the following protocols is used to map an IP address to a MAC address?
RARP
ARP
DHCP
BOOTP
The Reverse Address Resolution Protocol (RARP) is used to:
Map MAC address to IP address
Map IP address to MAC address
Provide automatic IP configuration
Assign DNS names to devices
The Dynamic Host Configuration Protocol (DHCP) is an improvement over:
RARP
ARP
BOOTP
DNS
Which of the following protocols operates at the application layer of the TCP/IP model?
ARP
RARP
DHCP
IP
The BOOTP protocol is primarily used to:
Translate IP addresses to domain names
Obtain the hardware address of a device
Assign IP addresses and boot information to diskless clients
Encrypt IP packets during transmission
Which of the following best describes the main purpose of Network Address Translation (NAT)?
To encrypt packets between source and destination
To convert private IP addresses to public IP addresses and vice versa
To assign IP addresses dynamically to clients
To filter packets based on port number
In Port Address Translation (PAT), multiple devices share a single public IP address by using:
Different subnet masks
Different port numbers
Different gateways
Different MAC addresses
The main function of DHCP (Dynamic Host Configuration Protocol) is to:
Translate domain names to IP addresses
Automatically assign IP addresses to network devices
Map IP addresses to MAC addresses
Encrypt data during transmission
How many usable host addresses are there in a /27 subnet?
16
32
30
62
Given the network 192.168.10.0/24 divided into two subnets, what are the first and last addresses of the first subnet?
192.168.10.0 and 192.168.10.255
192.168.10.1 and 192.168.10.126
192.168.10.0 and 192.168.10.127
192.168.10.128 and 192.168.10.255
When the network 192.168.10.0/24 is divided into two subnets, what are the first and last addresses of the second subnet?
192.168.10.0 and 192.168.10.127
192.168.10.1 and 192.168.10.126
192.168.10.128 and 192.168.10.255
192.168.10.129 and 192.168.10.254
The IP address 192.168.10.25 belongs to which class?
Class A
Class B
Class C
Class D
The CIDR notation /20 indicates how many bits are used for the network portion?
8 bits
16 bits
20 bits
24 bits
The IP address 10.0.0.0/8 represents which of the following?
Class A private network
Class B private network
Class C private network
Class D multicast address
In Distance Vector Routing, each router shares its routing table with:
All routers in the network
Only its directly connected neighbors
Only the destination routers
The central routing server
The Count-to-Infinity problem is associated with which type of routing algorithm?
Link State Routing
Distance Vector Routing
Path Vector Routing
Static Routing
Which algorithm is commonly used in Distance Vector Routing?
Dijkstra's algorithm
Bellman-Ford algorithm
Floyd–Warshall algorithm
Kruskal's algorithm
In Link State Routing, each router maintains information about:
Only its neighbors
Complete network topology
Only destination networks
Gateway routers
The algorithm used in Link State Routing is:
Bellman-Ford algorithm
Dijkstra’s algorithm
A* algorithm
Flooding algorithm
Which of the following is an example of a Link State protocol?
RIP
OSPF
BGP
IGRP
BGP uses which type of routing technique?
Distance Vector
Link State
Path Vector
Static
The primary function of BGP is to:
Route within an autonomous system
Exchange routing information between autonomous systems
Manage MAC address tables
Provide DNS resolution
The Reverse Path Forwarding (RPF) technique is mainly used in:
Unicast routing
Multicast routing
Static routing
Distance vector routing
BGP (Border Gateway Protocol) uses the routing technique to maintain complete path information of a network.
Distance Vector
Link State
Path Vector
Hybrid
Which of the following is a method used to solve the Count-to-Infinity problem in Distance Vector Routing?
Flooding
Split Horizon and Poison Reverse
Shortest Path First
Path Vector technique
Which of the following are IPv4 to IPv6 transition techniques?
Dual Stack
Tunneling
NAT Protocol Translation
Fragmentation
Tunneling in IPv6 transition is used to:
Convert IPv6 packets into IPv4 packets
Carry IPv6 packets over an IPv4 network
Replace IPv4 headers with IPv6 headers
Encrypt IPv4 data
The main reason for developing IPv6 was to overcome which limitation of IPv4?
Low transmission speed
Limited number of available IP addresses
Lack of routing protocols
Absence of DNS support
Which of the following features of IPv6 helps to solve the problem of IPv4 address depletion?
Use of 32-bit addresses
Use of 128-bit addresses
Use of private IP addresses
Use of dynamic routing
Which of the following multicast routing protocols uses a Reverse Path Forwarding (RPF) mechanism?
DVMRP
BGP
OSPF
RIP
PIM-SM (Protocol Independent Multicast – Sparse Mode) is best suited for which type of network?
Dense networks where receivers are everywhere
Sparse networks with few receivers
Point-to-point links
Networks with static routing
In PIM-DM (Dense Mode), how are multicast packets initially distributed?
Sent only to registered receivers
Sent to all routers, then pruned where not needed
Sent through unicast routes only
Sent to the Rendezvous Point first
Which multicast routing protocol builds a shared tree rooted at a Rendezvous Point (RP)?
PIM-DM
MOSPF
PIM-SM
DVMRP
The Multicast Open Shortest Path First (MOSPF) protocol is an extension of which routing protocol?
RIP
OSPF
BGP
EIGRP
