In Star topology, all data communications and traffic must pass through the

In Ring topology, what device/signal is required before it can be transmit data?

A set of rules and formats used to control and establish a communication link between two or more devices is knows as a 

Which one of the following protocols is used in the Application layer of TCP/IP model?

Which one of the following commands discovers the network path of Internet routers that packets take as they are forwarded from your computer to a destination address?

Peter needs to retrieve the MAC address of a laptop to perform a configuration on his computer. Which one of the following commands is used to retrieve the MAC address on his computer?

The acronym UTP stands for

Which type of cable is used with twisted pair cables with 8 wires and 8 pins connector?

In TCP/IP model, TCP stands for

Both TCP and UDP belong to which layer of the OSI reference model?

In the OSI reference model, which layers are concerned with services to applications?

Another name for MAC address is

The protocol that ensures the reliability of data transmission across Internet connected networks is

Which one of the following devices is used to extend the transmission distance of a LAN network?

A network administrator needs to connect less than 10 computers in a network in the same office to share information. The most efficient way to satisfy the requirement is through the use of

Which one of the following media is most susceptible to interference?

Which LAN topology connects peripherals in a circular path?

What is layer 7 of the OSI reference model called?

The internetworking device that operates on the physical Layer of the OSI reference model is

The DHCP server in a client/server network is used to

The two major types of computer networks are peer to peer network and

The transmission medium used by wireless networks to provide connectivity between networked devices is

Which one of the following is NOT an advantage of a wireless network?

Layer 4 of the OSI Network Model is also known as the

A broken network cable connection constitutes an error occurring in OSI

Which one of the following layers is found in the TCP/IP network model?

Which one of the following layers is common to both the OSI and TCP/IP network models?

Which one of the following is a valid Class C IP address?

What is the maximum number of host addresses that can be used in a Class C network? (Hint: 2ⁿ -2 where n is the number of bits)

What is the default subnet mask for Class C network?

A network administrator needs to connect 10 or more computers in a network to share information with high level of security. The most efficient way to satisfy the requirement is through use of

Which one of the following protocols is used to automatically assign IP address and IP subnet mask?

The TCP/IP stack consists of the

A class C network computer had an IP address of 192.35.11.63. Identify the octet(s) that belongs to the network?

The smallest and largest possible values for an IP address octet is

WLAN stands for  

A computer network that extends across countries and continents is a

Refer to following figure. The main function of Z is to pass only these signals targeted for computer on the other side of the similar type network. Identify Z.

Which one of the following networks link multiple networks on opposite sides of the world?

Which topology uses a special token packet as a polling mechanism by circulating it in Local Area Network?

Which type of communication cable is recommended in an electrical and magnetic interference environment

The OSI reference model organised the network functions into how many numbered layers?

Which layer of the OSI model provides reliable transmit of data across a physical link by using mac address?

The Network Interface layer of the TCP/IP model is corresponding to which layer/s of the OSI reference model

The device used in a network to centralise communication among several connected devices is the

Which of the network device use MAC addresses to forward data to other computers on the LAN?

The TCP/IP network model consists of

The OSI layer that is responsible for displaying data in a human readable format is the

Workstations in a Token Ring network negotiate their data transmission using

The Internet Protocol (IP) and Address Resolution Protocol operate in the

A unique and permanent IP address that is manually assigned to each workstation by network administrator is a

Domain Name System (DNS) is a distributed database that is used in TCP/IP networks to

The twisting of wire pairs in Unshielded Twisted Pair (UTP) cables is to

In a star network topology, the network will fail when

One advantage of using client/server networks is that

The Destination address in an Ethernet Data Frame refers to the  

The Open System Interconnection (OSI) reference model consist of

Which functional layer of the OSI reference model is involved in path selection, routing and IP addressing?

The Transport layer of the OSI reference model mainly deals with

Which one of the following network equipment are OSI layer 1 device?

In static IP addressing, the computer logged to the network

In the network, DHCP stands for

DNS server is used to  

An ideal peer-to-peer network consists of

One of the disadvantages of peer-to peer networking is 

A hub is considered as an OSI

Which one of the following networking devices is able to connect two dissimilar networks for communication?  

The OSI layer that is related to problems with the Network Interface Card is the

A suitable network command for checking the connectivity of networked devices is

Which of the following is not a layer of TCP/IP model?

Which one of the following can extend the physical size of network?

Peer-to-Peer network is a good choice for

Calculate the link loss margin, given the loss budget is 15dB and the total link loss is 4.2dB.

The fiber that allows light to travel in only one ray in the core is a

The transmitter power of a laser source is -4.2dbm and the receiver input power measured is -10.25 dbm. What is the power loss over the optical fiber link?

Refer to the following figure. It shows that the data is transmitted in one direction only from transmitter (computer) is being sent to the receiver (printer). This data communication is known a

The function of the “CRC” block in the Ethernet frame is

Which of the following devices used half-duplex mode for transmission?

Name the type of modulation technique used.

The name given to angle of incidence when 100% of the light is reflected and no light is refracted is

When you add or subtract two dBm, the results will be in

Which device allows visual tracing and testing of continuity in a fiber optic cable?

When only one subscriber cannot receive service, one of the potential faults can be at the

Which one of the following is the advantage of optical fiber over copper wire?

Fiber inspection probe is used to  

A single mode optical fiber (SMF) has a core size of

What is the POST?

The application programs must run on top of a software platform called

What is the full name for NIC card at the computer?

The Solid State Drive (SSD) is used as a new alternative to store data that the more traditional hard disk drive. What is the new alternative called?

During the booting process, the Central Processing Unit (CPU) access the BIOS from the

Which one of the following devices uses the magnetic storage principle?

What is the first task that the ROM BIOS will perform when the microcomputer is switched on?

The basic components of a computer network DO NOT include

Fill in the blank for the fields denoted by letter X, Y, Z

Name the type of connector that is used for internet connection with the twisted pair cabling?

Fill in the blanks accordingly to the OSI Reference Model

How many pairs of wires does an UTP cable have?

The common term of measurement for fiber optic diameter is in