TCB is Transfer Control Block

Correct Answer: Bus

Explanation:

Ethernet uses Bus topology.

Correct Answer: Physical Layer

Explanation:

Hubs regenerate electrical signals, which are specified at the Physical layer.

Correct Answer: The function of PAD (Packet Assembler Disassembler) is described in a document known as X3 The standard protocol has been defined between the terminal and the PAD, called X28; another standard protocol exists between hte PAD and the network, called X29 Together, these three recommendations are often called "triple X"

Correct Answer: Every line has an upper limit and a lower limit on the frequency of signals it can carry This limited range is called the bandwidth

Correct Answer: It is a set of rules defining a very simple virtual terminal interaction The NVT is used in the start of a Telnet session

Correct Answer: FALSE

Explanation:

FTP-File Transfer Protocol

Correct Answer: FALSE

Explanation:

Management Information Base is part of every SNMP-managed device. Each SNMP agent has the MIB database that contains information about the device's status, its performance, connections, and configuration. The MIB is queried by SNMP.

Correct Answer: Interior gateways connect LANs of one organization, whereas exterior gateways connect the organization to the outside world

Correct Answer: TRUE

Explanation:

It is a simple protocol used to exchange information between the routers.

Correct Answer: It is a protocol used to advertise the set of networks that can be reached with in an autonomous system BGP enables this information to be shared with the autonomous system