Physical Layer
What layer number is the physical layer?
What is layer 1
What layer number is the datalink layer?
What is layer 2
What layer number is the network layer?
What is layer 3
What layer number is the transport layer?
What is layer 4
What layer number is the Session layer?
What is layer 5
What is the main responsibility of the physical layer in networking?
A) Routing data packets between devices
B) Establishing secure connections between devices
C) Converting digital bits into electrical, radio, or optical signals
D) Analyzing network traffic and optimizing data transmission
what is
C) Converting digital bits into electrical, radio, or optical signals
What is the primary function of the data link layer in networking?
A) Establishing and terminating connections between devices
B) Detecting and correcting errors in the physical layer
C) Controlling access to the network medium for data transmission
D) Encrypting and securing data at the link level
What is
C) Controlling access to the network medium for data transmission
Which of the following are network layer protocols?
a. IPv6
b. TCP
c. HTTP
d. UDP
what is IPv6
What is one of the services provided by TCP?
a. Establishing a connection between devices
b. Encrypting data for secure transmission
c. Broadcasting data to multiple devices
d. Filtering network traffic based on IP addresses
a. Establishing a connection between devices
What is a common function of the session layer?
a. Managing network resources
b. Establishing user logins
c. Encrypting data transmission
d. Routing network traffic
b. Establishing user logins
What does the physical layer define in terms of characteristics?
A) Network protocols and standards
B) Data encryption and security methods
C) Network topology and device placement
D) Voltage levels, data rates, and transmission distances
D) Voltage levels, data rates, and transmission distances
What does the Data link layer do? (choose two)
a. It makes sure messages go to the right device on a network using special addresses.
b. It helps connect devices together so they can talk to each other.
c. It controls when messages start and stop going through the network.
d. It helps devices send and receive information to each other over the network.
a. It makes sure messages go to the right device on a network using special addresses.
and
d. It helps devices send and receive information to each other over the network.
Which of the following is a characteristics of IP?
a. Ensure reliable end to end data transmission
b. Collisions are avoided in different transmission media
c. Sender doesn’t know if the receiver is listening or the message arrived on time
d. It provides information on the amounts of memory installed, what IOS images was loaded during boot and more
What is
c. Sender doesn’t know if the receiver is listening or the message arrived on time
What does TCP ensure during data transmission?
a. Low latency for faster communication
b. Reliable delivery of segments
c. Random order of segment arrival
d. Maximum bandwidth utilization
b. Reliable delivery of segments
What is the role of the session layer in a web-conferencing application?
a. Managing audio and video streams
b. Establishing network connections
c. Encrypting data transmission
d. Resolving domain names
a. Managing audio and video streams
Which layer specifies the layout of pins, voltages, and physical connectors?
A) Data link layer
B) Transport layer
C) Application layer
D) Physical layer
D) Physical layer
What are two services performed by the data link layer of the OSI model? (Choose two.)
a. It encrypts data packets.
b. It determines the path to forward packets.
c. It accepts Layer 3 packets and encapsulates them into frames.
d. It provides media access control and performs error detection.
e. It monitors the Layer 2 communication by building a MAC address table.
c. It accepts Layer 3 packets and encapsulates them into frames.
d. It provides media access control and performs error detection.
Why is IPv6 preferred over IPv4?
a. Better performance in terms of subnetting
b. Increased address space
c. Support higher transmission speed
d. Suitable for both wired and wireless networks
What is
b. Increased address space
How does TCP handle the order of data arrival?
a. It discards out-of-order segments.
b. It reassembles segments into the proper order.
c. It encrypts the segments for secure transmission.
d. It duplicates segments to ensure delivery.
b. It reassembles segments into the proper order.
Which layer is responsible for establishing and terminating sessions between computers?
a. Physical layer
b. Data link layer
c. Transport layer
d. Session layer
d. Session layer
How does the physical layer represent 1s and 0s over a physical signal?
A) By using different encoding schemes
B) By modulating the signal frequency
C) By varying the signal voltage or light pulse
D) By encrypting the data packets
C) By varying the signal voltage or light pulse
Which data link layer media access control method does Ethernet use?
a. CSMA/CD
b. determinism
c. turn taking
d. token passing
a. CSMA/CD
CSMA/CD stands for Carrier Sense Multiple Access/Collision Detection
What is the purpose of default gateway?
a. Enable routers to send packets using the default routes
b. A list of gateways for linking wired to wireless networks
c. Default gateways are layer 2 switches which forward packets to routers
d. Hosts will use the default gateway when sending packets to remote networks.
d. Hosts will use the default gateway when sending packets to remote networks.
What is the purpose of flow control in TCP?
a. Ensuring constant high data transmission rates
b. Prioritizing certain types of network traffic
c. Balancing network load across multiple devices
d. Regulating data flow to prevent overwhelming resources
d. Regulating data flow to prevent overwhelming resources
How does the session layer contribute to maintaining active sessions?
a. By encrypting the data during transmission
b. By monitoring network performance and adjusting settings
c. By exchanging information to keep dialogs active
d. By providing error checking and retransmission mechanisms
c. By exchanging information to keep dialogs active