Ngân Hàng Câu Hỏi Ôn Tập

What is the data unit PDU (Protocol Data Unit) at the Data Link layer called?

• Data

• Frame

• Packet

• Segment

What does OSI stand for?

• Open System Interconnect

• Opens System Interconnection

• Open Systems Interconect

• Open Systems Interconnection

Which device can commonly be used to connect computers into a LAN?

• Repeater

• Modem

• Switch

• Firewall

The architecture of a LAN can be:

• RING

• BUS

• STAR

• Can combine a, b, and c

How many layers does the OSI model have?

• 7

• 4

• 5

• 3

What is the signal transmitted over the transmission medium in a local network?

• Analog signal

• Digitally modulated signal

• Optical signal

• Digitally encoded signal according to transmission code

What is the hexadecimal value corresponding to the binary sequence: 1101-0010-0101-1011?

• B25A

• C3D4

• D25B

• EE25

According to scale and geographical distance, what types of computer networks are there?

• LAN, MAN, WAN

• LAN, WAN, WEB

• WEB, HTTP, FTP

• Client - Server

What is the unit of measurement for the throughput of a transmission line?

• Bps

• KByte

• Hz

• Gbytes

What components does a computer network consist of?

• Devices, physical transmission media

• Physical transmission media, network architecture

• Network architecture, devices

• Devices, physical transmission media, network architecture and protocols