Which of the following communications service provides message preparation and transmission facilities? x400 Teletex Fax Teletext None of these TRUE ANSWER : ? YOUR ANSWER : ?
When creating a pool of global addresses, which of the following can be used instead of the netmask command? block-size no mask / (slash notation) prefix-length TRUE ANSWER : ? YOUR ANSWER : ?
Which transmission mode is used for data communication along telephone lines? None of these Parallel Asynchronous Serial Synchronous TRUE ANSWER : ? YOUR ANSWER : ?
A 4 KHz noiseless channel with one sample every 125 per sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.048 Mbps encoding is used. 500 Kbps 64 Kbps 8 Kbps 32 Kbps None of these TRUE ANSWER : ? YOUR ANSWER : ?
The transport layer protocol is connectionless. None of these UDP NVT TCP FTP TRUE ANSWER : ? YOUR ANSWER : ?
The communication mode that supports data in both directions at the same time is None of these half-duplex full-duplex simplex multiplex TRUE ANSWER : ? YOUR ANSWER : ?
Select the wrong data communication system component: Medium Protocol Receiver Transits TRUE ANSWER : ? YOUR ANSWER : ?
RS-232-G specifies only the mechanical characteristics of an interface by providing a 25-pin connector None of these requires only 7 pin out of 25 in order to transmit digital data over public telephone lines is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment is an interface between two data circuit terminating equipment as examplified by a local and remote modem TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following services use TCP?1. DHCP2. SMTP3. HTTP4. TFTP5. FTP 1, 3 and 4 1 and 2 2, 3 and 5 1, 2 and 4 TRUE ANSWER : ? YOUR ANSWER : ?
You want to improve network performance by increasing the bandwidth available to hosts and limit the size of the broadcast domains. Which of the following options will achieve this goal? Managed hubs Switches configured with VLANs Bridges Switches TRUE ANSWER : ? YOUR ANSWER : ?