Comprehensive Exercises With Ans Set B

Comprehensive Exercises With Ans Set B - Comprehensive...

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Comprehensive Exercise Questions SET B Assume that all 0 and all 1 subnets are NOT usable unless otherwise stated!!! 1- UDP Means: (a) User Datagram Protocol (b) Useless Digital Procedures (c) Ultrafast Data Packing (d) Unclear Design Principle Answer: A 2- Which one of the following statements about networks and subnets is correct ? (a) 192.168.255.25 is not a legitimate address because “255” is a reserved number. (b) The address 128.36.234.198 is a class A address ant most probably it belongs to a large company. (c) A Class C address with mask 255.255.255.192 implies that subnetting is not used (d) All Class B addresses start with a number between 128 and 191 in the first byte (e) A Calss C address with mask 255.255.255.240 allows up to 6 subnets. Answer: D 3- What is the maximum number of hosts that can be used in a class B network with a subnet mask 255.255.252.0? (a) 511 (b) 1022 (c) 509 (d) 1023 (e) 510 Answer: B 4- What is the maximum number of subnets that can be used in a class A network with a subnet mask 255.255.192.0? (a) 511 (b) 1022 (c) 510 (d) 1023 (e) none of the above Answer: B
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5- Which one of the following statements is wrong about segments in a TCP/IP network (a) Segment header is typically 20 bytes long (b) F flag is used to Force a new connection (c) The ACK field is used for error control (d) Credit Window field assists proper flow of segments (e) The “data offset” field is used to measure the segment header length Answer: B 6- Which one of the following is not a broadcast address? (a) IP address = 129.7.191.255, subnet mask = 255.255.224.0 (b) IP address = 129.7.254.255, subnet mask = 255.255.240.0 (c) IP address = 129.7.207.255, subnet mask = 255.255.240.0 (d) IP address = 129.7.251.255, subnet mask = 255.255.255.0 (e) All of the above are broadcast addresses Answer: B 7- Which one of the following statements is wrong (a) CRC field in Ethernet Frame is used to detect errors in the frame (b) Checksum field in Segment Header is used to detect errors in the segment header (c) Cheksum field in IP packet header is used to detect errors in the packet header (d) Parity bit in serial transmission is used to detect single bit errors. Answer: B 8- In which one of the following cases there is no subnetting? (a) IP address = 155.139.251.222, subnet mask = 255.255.0.0 (b) IP address = 205.139.251.222, subnet mask = 255.255.255.248 (c) IP address = 172.139.251.222, subnet mask = 255.255.192.0 (d) IP address = 172.139.251.222, subnet mask = 255.255.255.128 (e) IP address = 55.139.251.222, subnet mask = 255.255.0.0 Answer: A 9- Which one of the following does not have the same meaning as “Ethernet Address”? (a) NIC Address (b) Logical Address (c) MAC Address (d) Hardware Address (e) Physical Address
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Answer: B 10- Which one of the following statements is wrong about TCP segment header fields: (a) Credit window field is used for flow control (b) Sequence number field is used for orderliness and error control (c) S flag is used for signaling an error condition
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This note was uploaded on 10/09/2010 for the course MIS 5339 taught by Professor Gercek,g during the Spring '10 term at UH Clear Lake.

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Comprehensive Exercises With Ans Set B - Comprehensive...

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