network – web-dev-net-platform – কুইজ মডেল টেস্ট অনুশীলন – 14

131. You need to configure a default route on a router. Which command will configure a default route on a router?

1. PC1 (config)# ip route 0.0.0.0 10.1.1.0 10.1.1.1
2. PC1 (config)# ip default-route 10.1.1.0
3. PC1 (config)# ip default-gateway 10.1.1.0
4. PC1 (config)# ip route 0.0.0.0 0.0.0.0 10.1.1.1

132. Company has a Class C network and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?

1. 255.255.255.192
2. 255.255.255.240
3. 255.255.255.224
4. 255.255.255.248

133. A technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command. In which OSI layer is the problem most likely occurring?

1. Physical
2. Data link
3. Transport layer
4. Network layer

134. You wish to upgrade the IOS of a router without removing the image currently installed. What command will display the amount of memory that is being used by the current IOS image and whether there is enough room available to hold both the current and new images?

1. Router# show memory
2. Router# show flash
3. Router# show buffers
4. Router# show version

135. You are experiencing intermittent issues relating to congestion within the network. What are the possible causes of congestion on this LAN?

1. Full duplex operation.
2. Multicasting
3. None of the above
4. A broadcast domain with too many hosts.

136. You are a systems administrator and you are about to assign static IP addresses to various servers on your network. For the network 192.168.20.24/29 the router is assigned to the first usable host address, while the last usable host address goes to your Sales server. Which one of the following commands would you enter into the IP properties box of the sales server?

1. IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.9
2. IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.20.1
3. IP address: 192.168.20.30 Subnet Mask 255.255.255.248 Default Gateway: 192.168.20.25
4. IP address: 192.168.20.30 Subnet Mask 255.255.255.240 Default Gateway: 192.168.20.17

137. When files are transferred between a host and an FTP server, the data is divided into smaller pieces for transmission. As these pieces arrive at the destination host, they must be reassembled to reconstruct the original file. What provides for the reassembly of these pieces into the correct order?

1. The sequence number in the TCP header
2. The acknowledgement number in the segment header
3. The TTL in the IP header
4. The Start Frame Delimiter in the 802.3 Preamble

138. Thrashing…

1. always occurs on large computers
2. can be caused by poor paging algorithms
3. can always be avoided by swapping
4. is a natural consequence of virtual memory systems

139. What is the maximum number of IP addresses that can be assigned to hosts on a subnet that uses the 255.255.255.224 subnet mask?

1. 30
2. 16
3. 14
4. 15

140. You want to enable telnet access to a router as securely as possible. Which of the following commands would you execute if you wanted to enable others to establish a telnet session on a Cisco router?

1. 1(config)# line vty 0 1(config-line)#enable secret 1(config-line)# login
2. 1(config)#line vty 0 1(config-line)#password 1(config-line)#login
3. 1(config)# line vty 0 1(config-line)#enable password
4. 1(config)# line console 0 1(config-if)# enable password

আমাদের কাছে থাকা লক্ষ লক্ষ মডেল টেস্ট থেকে প্রাকটিজের জন্য কিছু এখানে তুলে ধরা হল। প্রতিটি অধ্যায়ের উপরে ইশিখন.কম কুইজ চ্যালেঞ্জ এ আছে শত শত মডেল টেস্ট বার বার মডেল টেস্ট দিয়ে নিজেকে যাচাই কর এবং পুরো বাংলাদেশের সকল শিক্ষার্থীর সাথে আপনার মেধা তালিকা দেখুন। প্রশ্নে কোন প্রকার ভুল থাকলে সঠিক উত্তরসহ নিচে কমেন্ট করে জানাবেন, আমরা ঠিক করে দেবো।