AD HOC AND SENSOR NETWORK MCQ QUESTION
UNIT I AD HOC NETWORKS - INTRODUCTION AND ROUTING PROTOCOLS
1. What is the access point (AP) in a wireless LAN? a) device that allows wireless devices to connect to a wired network b) wireless devices itself c) both device that allows wireless devices to connect to a wired network and wireless devices itself d) all the nodes in the network Answer: a Explanation: Access point in a wireless network is any device that will allow the wireless devices to a wired network. A router is the best example of an Access Point.
2. In wireless ad-hoc network _________ a) access point is not required b) access point is must c) nodes are not required d) all nodes are access points Answer: a Explanation: An ad-hoc wireless network is a decentralized kind of a wireless network. An access point is usually a central device and it would go against the rules of the ad-hoc network to use one. Hence it is not required.
3. Which multiple access technique is used by IEEE 802.11 standard for wireless LAN? a) CDMA b) CSMA/CA c) ALOHA d) CSMA/CD Answer: b Explanation: CSMA/CA stands for Carrier sense multiple access/collision avoidance. It is a multiple access protocol used by IEEE 802.11 standard for wireless LAN. It’s based on the principle of collision avoidance by using different algorithms to avoid collisions between channels.
4. In wireless distribution system __________ a) multiple access point are inter-connected with each other b) there is no access point c) only one access point exists d) access points are not required Answer: a Explanation: A Wireless Distribution System allows the connection of multiple access points together. It is used to expand a wireless network to a larger network.
5. A wireless network interface controller can work in _______ a) infrastructure mode b) ad-hoc mode c) both infrastructure mode and ad-hoc mode d) WDS mode
Answer: c Explanation: A wireless network interface controller works on the physical layer and the data link layer of the OSI model. Infrastructure mode WNIC needs access point but in ad-hoc mode access point is not required.
6. In wireless network an extended service set is a set of ________ a) connected basic service sets b) all stations c) all access points d) connected access points Answer: a Explanation: The extended service set is a part of the IEEE 802.11 WLAN architecture and is used to expand the range of the basic service set by allowing connection of multiple basic service sets.
7. Mostly ________ is used in wireless LAN. a) time division multiplexing b) orthogonal frequency division multiplexing c) space division multiplexing d) channel division multiplexing Answer: b Explanation: In orthogonal frequency division multiplexing, digital data is encoded on multiple carrier frequencies. It is also used in digital television and audio broadcasting in addition to Wireless LANs.
8. Which one of the following event is not possible in wireless LAN? a) collision detection b) acknowledgement of data frames c) multi-mode data transmission d) connection to wired networks Answer: a Explanation: Collision detection is not possible in wireless LAN with no extensions. Collision detection techniques for multiple access like CSMA/CD are used to detect collisions in Wireless LANs.
9. What is Wired Equivalent Privacy (WEP)? a) security algorithm for ethernet b) security algorithm for wireless networks c) security algorithm for usb communication d) security algorithm for emails Answer: b Explanation: WEP is a security algorithm for wireless network which intended to provide data confidentiality comparable to that of traditional wired networks. It was introduced in 1997.
10. What is WPA? a) wi-fi protected access b) wired protected access c) wired process access d) wi-fi process access Answer: a Explanation: WPA or WiFi Protected Access is a security protocol used to provide users and firms with strong data security and protection for their wireless networks (WiFi) to give them confidence that only authorized users can access their network.
TOPIC ISSUES IN AD HOC WIRELESS NETWORKS 1. IEEE 802.11 defines the basic service set as the building block of a wireless 1. LAN 2. WAN protocol 3. MAN 4. All of the above Answer: A
2. In wireless LAN, there are many hidden stations so we cannot detect the 1. Frames 2. Collision 3. Signal 4. Data Answer: B
3. A set that makes stationary or mobile wireless station and also have optional central base station is known as 1. Basic service set 2. Extended service set 3. Network point set 4. Access point Answer: A
4. Wireless communication started in 1. 1869 2. 1895 3. 1879 4. 1885 Answer: B
5. The wireless transmission is divided into 1. 3 broad groups 2. 6 broad groups 3. 9 broad groups 4. 8 broad groups
Answer: A
1) Alternate and adaptive routing algorithm belongs to ………. A. static routing B. permanent routing C. standard routing D. dynamic routing Answer: D
2) ………. protocol is a popular example of a link-state routing protocol. A. SPF B. BGP C. RIP D. OSPF Answer: D
3) An example of the routing algorithm is … A. TELNET B. TNET C. ARPANET D. ARNET Answer: C
4) The Enhanced Interior Gateway Routing Protocol(EIGRP) is categorized as a …….. A. Distance vector routing protocols B. Link state routing protocols C. Hybrid routing protocols D. Automatic state routing protocols Answer: C
5) In ………. routing, the routing table hold the address of just the next hop instead of complete route information. A. next-hop B. host-specific C. network-specific D. default Answer: A
6) ………. was originally developed to provide a loop-free method of exchanging routing information between autonomous systems. A. OSPF B. EIGRP C. BGP D. RIP Answer: C
7) In ………… routing, the destination address is a network address in the routing tables. A. next-hop B. host-specific C. network-specific D. default Answer: C
8) Logical partitioning of the network, authentication and faster convergence rate are the advantages of …. A. OSPF B. EIGRP C. BGP D. RIP Answer: A
9) The ………. flag indicates the availability of a router. A. up B. host-specific C. gateway D. added by redirection Answer: D
10) The types of autonomous system defined by BGP is/are .. A. Stub B. Multi-homed C. Transit D. All of the above Answer: D
11) For a direct deliver, the …….. flag is on. A. up B. host specific C. gateway D. added by redirection Answer: C
12) A ………. AS has connections to two or more autonomous systems and carries both local and transit traffic. A. Stub B. Multi-homed C. Transit D. All of the above Answer: C
13) In unicast routing, each router in the domain has a table that defines a ……… path tree to possible destinations. A. average B. longest C. shortest D. very longest Answer: C
14) ………….. supports the simultaneous use of multiple unequal cost paths to a destination. A. OSPF B. EIGRP C. BGP D. RIP Answer: B
15) In multicast routing, each involved router needs to construct a ……… path tree for each group. A. average B. longest C. shortest D. very longest Answer: C
16) Which of the following is/are the benefits provided by EIGRP? i) Faster convergence ii) partial routing updates iii) High bandwidth utilization iv) Route summarization A. i, iii and iv only B. i, ii and iii only C. ii, iii and iv only D. i, ii and iv only Answer: D
17) In OSPF, a ………. link is a network is connected to only one router. A. point-to-point B. transient C. stub D. multipoint Answer: C
18) ……… is the process of consolidating multiple contiguous routing entries into a single advertisement. A. Faster convergence B. Partial routing updates C. Route summarization D. Multiple protocols Answer: C
19) In OSPF, when the link between two routers is broken, the administration may create a …….. link between them using a longer path that probably goes through several routers. A. point-to-point B. transient C. stub D. multipoint Answer: D
20) ……….. is the process of introducing external routers into an OSPF network. A. Route redistribution B. Route summarization C. Route reintroducing D. Route recreation Answer: A
TOPIC DESTINATION SEQUENCED DISTANCE VECTOR (DSDV) 1) Which of the following is not the requirement of routing function? A. Correctness B. Robustness C. Delay time D. Stability Answer: C
2) The ……… protocol allows the administrator to assign a cost, called the metric, to each route. A. OSPF B. RIP C. BGP D. BBGP Answer: A
3) If there is only one routing sequence for each source destination pair, the scheme is known as ….. A. static routing B. fixed alternative routing C. standard routing D. dynamic routing Answer: B
4) The Open Shortest Path First(OSPF) protocol is an intra domain routing protocol based on …….. routing. A. distance vector B. link state C. path vector D. non distance vector Answer: B
5) An/A ……….routing scheme is designed to enable switches to react to changing traffic patterns on the network. A. static routing B. fixed alternative routing C. standard routing D. dynamic routing Answer: C
6) The Routing Information Protocol(RIP) is an intra domain routing based on ……..routing.
A. distance vector B. link state C. path vector D. distance code Answer: A
7) The term …….. refers to which node or nodes in the network are responsible for the routing decision. A. decision place B. routing place C. node place D. switching place Answer: A
8) In ……. routing the least cost route between any two nodes is the minimum distance. A. path vector B. distance vector C. link state D. switching Answer: B
9) For centralized routing the decision is made by some designated node called …… A. designated center B. control center C. network center D. network control center Answer: D
10) For purposes of routing, the Internet is divided into ……. A. wide area networks B. autonomous networks C. local area networks D. autonomous system Answer: D
11) In ………. a route is selected for each destination pair of nodes in the network. A. flooding B. variable routing C. fixed routing D. random routing Answer: C
12) To create a neighborhood relationship, a router running BGP sends an ………. message. A. open B. update C. keep alive D. close Answer: B
13) The technique which requires no network information required is …. A. flooding B. variable routing C. fixed routing D. random routing Answer: A
14) An area is …. A. part of an AS B. composed of at least two AS C. another term for an AS D. composed more than two AS Answer: A
15) Which of the following produces high traffic network? A. Variable routing B. Flooding C. Fixed routing D. Random routing Answer: B
16) In ……….. routing, we assume that there is one node (or more) in each autonomous system that acts on behave of the entire autonomous system. A. distant vector B. path vector C. link state D. multipoint Answer: B
17) When a direct delivery is made, both the deliverer and receiver have the same …. A. routing table B. host id C. IP address D. Net id Answer: D
18) In OSPF, a ……… link is a network with several routers attached to it. A. point-to-point B. transient C. stub D. multipoint Answer: B
19) In ……. routing, the mask and the destination address are both 0.0.0.0 in routing table. A. next-hop B. host-specific C. network-specific D. default Answer: D
20) In ………. the router forwards the receive packet through only one of its interfaces. A. unicasting B. multicasting C. broadcasting D. point to point Answer: B
1) A wireless network interface controller can work in a) infrastructure mode b) ad-hoc mode c) both infrastructure mode and ad-hoc mode d) none of the mentioned Answer: c
2) In AODV routing algorithm for MANETs, the route is discovered at time a.only when the network is established b. in middle of the transmission c. when there is a need for route by the host d. when there is no need for route by the host Answer: c
3) Which one of the following routing algorithm can be used for network layer design? a. shortest path algorithm b. distance vector routing c.link state routing d. all of the mentioned Answer: c
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