MCQ 1 Frames from one LAN can be transmitted to another LAN via the device.

(A) Router (B) Bridge (C) Repeater (D) Modem

MCQ 2 Which of the following condition is used to transmit two packets over a medium at the same time?

(A) Contention (B) Collision (C) Synchronous (D) Asynchronous

MCQ 3 Bluetooth is an example of ______________________.

(A) personal area network (B) local area network (C) virtual private network (D) wide area network

MCQ 4 What is the default subnet mask for a class C network?

(A) 127.0.0.1 (B) 255.0.0.0 (C) 255.255.0.0 (D) 255.255.255.0

MCQ 5 How many hosts are attached to each of the local area networks at your site?

(A) 128 (B) 64 (C) 256 (D) 254

MCQ 6 The physical layer is concerned with ______________.

(A) bit-by-bit delivery (B) process to process delivery (C) application to application delivery (D) port to port delivery

MCQ 7 Which of the following device is used to connect two systems, especially if the systems use different protocols?

(A) Hub (B) Bridge (C) Gateway (D) Repeater

MCQ 8 Transport layer is implemented in __________________.

(A) End system (B) NIC (C) Ethernet (D) Packet transport

MCQ 9 A remote batch-processing operation in which data is solely input to a central computer would require a

(A) telegraph line (B) simplex lines (C) mixedband channel (D) All of the above

MCQ 10 What is Unicode?

(A) Represents symbol or characters used in any language (B) Only few languages are supported (C) Supports only few characters (D) Characters from A to Z

MCQ 11 For data communications to occur, the communicating devices must be part of a communication system made up of a combination of?

(A) WAN and LAN (B) Hardware and software (C) Full duplex and half duplex (D) All of the above

MCQ 12 Data communications system depends on fundamental characteristics.

(A) receiver (B) Sender (C) Timeliness (D) Medium

MCQ 13 What are the 4 fundamental characteristics of a data communication

(A) Receiver, Sender, Timeliness and Jitter (B) Receiver, Sender, Jitter and Medium (C) Delivery, Sender, Timeliness and Jitter (D) Delivery, Accuracy, Timeliness and Jitter

MCQ 14 A data communications system has how many components

(A) 8 (B) 6 (C) 4 (D) 5

MCQ 15 Select the correct cable that transport signals in the form of light

(A) Twisted Pair Cable (B) Fiber Optic Cable (C) Coaxial Cable (D) Shielded Twisted Pair Cable

MCQ 16 Twisted pair wires, coaxial cable, optical fiber cables are the examples of.

(A) Wired Media (B) Wireless Media (C) Both A & B (D) None of the above

MCQ 17 Header of a frame generally contains ______________.

(A) synchronization bytes (B) addresses (C) frame identifier (D) All of the above

MCQ 18 CRC stands for _______________.

(A) cyclic redundancy check (B) code repeat check (C) code redundancy check (D) cyclic repeat check

MCQ 19 Which of the following is a data link protocol?

(A) Ethernet (B) Point to point protocol (C) HDLC (D) All of the above

MCQ 20 The network layer is concerned with ______________ of data

(A) bits (B) frames (C) packets (D) bytes

MCQ 21 Network layer firewall works as a _______________.

(A) Frame filter (B) Packet filter (C) Content filter (D) Virus filter

MCQ 22 A proxy firewall filters at _______________.

(A) Physical layer (B) Data link layer (C) Network layer (D) Application layer

MCQ 23 A packet filter firewall filters at _______________.

(A) Physical layer (B) Data link layer (C) Network layer or Transport layer (D) Application layer

MCQ 24 Which one of the following is not a function of network layer?

(A) Routing (B) Inter-networking (C) Congestion control (D) Error control

MCQ 25 A 4 byte IP address consists of _______________.

(A) only network address (B) only host address (C) network address & host address (D) network address & MAC address

MCQ 26 DDD

(A) SS` (B) HH (C) HH (D) HH