1: Fiber optics posses following properties __________
A) Immune electromagnetic interference
B) Very less signal attenuation
C) Very hard to tap
D) All of the mentioned
Ans: C) - Very hard to tap
2: Which operational mode/s of HDLC support/s the balanced configuration by governing point-to-point link connectivity in addition to the primary as well as secondary functions performed by the station?
A) NRM
B) ABM
C) Both A & B
D) None of the above
Ans: D) None of the above.
3: Physical or logical arrangement of network is __________
A) Topology
B) Routing
C) Networking
D) Control
Ans: A) Topology.
4: In TDM, slots are further divided into __________
A) Seconds
B) Frames
C) Packets
D) Bits
Ans: B) Frames.
5: There are ________ total features of Frame Relay.
A) Five
B) Seven
C) Nine
D) Ten
Ans: C) Nine.
6: Radio channels are attractive medium because __________
A) Can penetrate walls
B) Connectivity can be given to mobile user
C) Can carry signals for long distance
D) All of the mentioned
Ans: D) All of the mentioned.
7: Frame Relay is cheaper than other _____
A) LANs
B) WANs
C) MANs
D) Multipoint Networks
Ans: B) WANs.
8: Which of this is not a guided media?
A) Fiber optical cable
B) Coaxial cable
C) Wireless LAN
D) Copper wire
Ans: C) Wireless LAN .
9: Virtual circuit identifier in frame relay is called _______
A) data link connection identifier
B) frame relay identifier
C) cell relay identifier
D) circuit connection identifier
Ans: A) data link connection identifier.
10: The protocol designed to make the security of wireless LAN as good as that of wired LAN.
A) WTLS
B) WEP
C) RSN
D) WP
Ans: B) WEP.
11: WTLS stands for?
A) Wireless Transport Security Layer
B) Wireless Transfer System Layer
C) Wireless Transfer Security Layer
D) Wireless Transport System Layer
Ans: A) Wireless Transport Security Layer.
12: A person who enjoys learning details about computers and how to enhance their capabilities.
A) Cracker
B) Hacker
C) App controller
D) Site controller
Ans: B) Hacker.
13: Frame Relay networks offer an option called _______
A) Voice Over For Relay
B) Voice Over Fine Relay
C) Voice On Frame Relay
D) Voice Over Frame Relay
Ans: D) Voice Over Frame Relay.
14: Which network topology requires a central controller or hub?
A) Star
B) Mesh
C) Ring
D) Bus
Ans: A) Star.
15: WAN stands for __________
A) World area network
B) Wide area network
C) Web area network
D) Web access network
Ans: B) Wide area network.
16: The process of transforming plain text into unreadable text.
A) Decryption
B) Encryption
C) Network Security
D) Information Hiding
Ans: B) Encryption.
17: Which consequences are more likely to occur during the frame transmission in Stop-and-Wait ARQ mechanism?
A) Loss of frame or an acknowledgement
B) Delay in an acknowledgement
C) Normal operation
D) All of the above
Ans: D) All of the above.
18: UTP is commonly used in __________
A) DSL
B) FTTP
C) HTTP
D) None of the mentioned
Ans: A) DSL.
19: A process of making the encrypted text readable again.
A) Decryption
B) Encryption
C) Network Security
D) Information hiding
Ans: A) Decryption
20: Which among the following represents the objectives/requirements of Data Link Layer?
A) Frame Synchronization
B) Error & Flow Control
C) Both a & b
D) Both a & b
Ans: C) Both a & b.
21: Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion?
A) Control Variables
B) Sender Sliding Window
C) Receiver Sliding Window
D) Resending of frames
Ans: B) Sender Sliding Window.
22: In wireless ad-hoc network _________
A) access point is not required
B) access point is must
C) nodes are not required
D) nodes are not required
Ans: A) access point is not required.
23: What are the frames issued by the secondary station of HDLC ,known as?
A) Link
B) Command
C) Response
D) None of the above
Ans: C) Response.
24: _____ is the multiplexing technique that shifts each signal to a different carrier frequency.
A) FDM
B) TDM
C) Both FDM & TDM
D) PDM
Ans: A) FDM.
25: Frame relay has only _______
A) physical layer
B) data link layer
C) physical layer and data link layer
D) network layer and data link layer
Ans: C) Physical Layer and Data Link Layer.
