Question: A technology defined at the Data Link layer is:
Ethernet.
TCP.
SMTP.
IP.
Answer: Ethernet.
Question: The TCP/IP stack has ____ layers.
Answer: 4
Question: A technology that uses broadcasting to transmit data sends the data to:
Answer Options:
All stations on the network
All computers on the Internet
Only the intended destination of the data
None of the above
Answer: All stations on the network
Question: A REST API
Answer Options:
Is the mechanism for databases to store and user data
Is a popular mechanism for computer applications to exchange data
Is the default payment mechanism in online video games
Is a place to rest when visiting a website
Answer: Is a popular mechanism for computer applications to exchange data
Question: SMTP is used to
Answer Options:
Access web pages
Manipulate the contents of the mailbox
Deliver email to the destination mail server
Delete mail in the mailbox
Answer: Deliver email to the destination mail server
Question: When the data link layer detects errors in incoming data, it typically:
Answer Options:
Deletes the data
Accepts the data, but marks it so that upper layers can fix the error
Attempts to fix the error
Accepts the data anyway
Answer: Accepts the data, but marks it so that upper layers can fix the error
Question: Data is converted to signals for transmission because:
Answer Options:
There is no known method to transport data over physical media.
Network carriers prefer to transport signals.
Data is expensive to transport over physical media.
Signals are inexpensive to transport over physical media.
Answer: Network carriers prefer to transport signals.
Question: A computer knows that it is the intended receiver of a data packet by looking at:
Answer Options:
Frame check sequence field
The source address of the packet
The destination address of the packet
The start of frame delimiter
Answer: The destination address of the packet
Question: The important functions of the Transport layer include all of the following except:
Answer Options:
Port addressing
Routing
Segmentation
Duplicate detection
Answer: Routing
Question: The three-way handshake is used in:
Answer Options:
Connection establishment
Reliability
Segmentation
Flow control
Multiplexing
Answer: Connection establishment
Question: The contribution of the OSI model was that:
It helped develop the technologies used for reliable data delivery.
It helped develop the technologies used for signaling.
It helped specify the concept of layers in data communication.
It helped develop the technology used for routing.
Answer: It helped specify the concept of layers in data communication.
Question: The Transport layer in the TCP/IP stack is responsible for:
Segmentation and reassembly of packets.
Specifying end user needs.
Error control.
Identifying and locating the destination.
Answer: Segmentation and reassembly of packets.
Question: The header of a data packet contains all of the following except:
User data.
Receiver address.
Sender address.
Packet size.
Answer: User data.
Question: In FDM (Frequency Division Multiplexing):
Answer Options:
Signals from each channel are sent at a specified frequency.
Signals from each channel are sent at a specified time.
Signals from each channel are sent at a specified phase.
Signals from each channel are sent at a specified amplitude.
Answer: Signals from each channel are sent at a specified frequency.
Question: Multiplexing at the Transport layer enables:
Answer Options:
Both of the above
Multiple hosts to share a common physical medium
Multiple applications on the host to share a common network connection
None of the above
Answer: Multiple applications on the host to share a common network connection
Question: The benefits of the spanning tree algorithm for network designers is that it:
Answer Options:
Adds Border Gateway Protocol to the network
It allows more users to be added to the same network.
Answer: It allows more users to be added to the same network.
Question: Packetization is the process of:
Communicating between computer applications.
Sending letters to friends.
Breaking down user data into small segments.
Sending user data over networks.
Answer: Breaking down user data into small segments.
Question: A switch will broadcast a packet on the network:
Answer Options:
When the destination address of the frame is not in its forwarding table
For outgoing frames
During normal operations
For incoming frames
Answer: When the destination address of the frame is not in its forwarding table
Question: Flow control in TCP is used to:
Answer Options:
Slow down the receiver if necessary
Speed up the sender if necessary
Speed up the receiver if necessary
Slow down the sender if necessary
Answer: Slow down the sender if necessary
Question: The three-way handshake is used in:
Answer Options:
Connection establishment
Reliability
Segmentation
Flow control
Multiplexing
Answer: Connection establishment
Question: The Transport layer protocol that does not provide end-to-end reliability over packet-switched networks is:
Answer Options:
UDP
HTTP
IP
TCP
Answer: UDP
Question: Port addresses identify:
Answer Options:
The destination host on the network
The application on the host
The source host on the network
None of the above
Answer: The application on the host