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  1. Question 1
  2. 0.4 / 0.4 pts
  3. A NAT-enabled router is hiding the details of the home network from the outside world.
  4.  
  5. Correct!
  6. True
  7. False
  8.  
  9. Question 2
  10. 0.4 / 0.4 pts
  11. A SDN uses destination-based forwarding table.
  12.  
  13. True
  14. Correct!
  15. False
  16.  
  17. Question 3
  18. 0.4 / 0.4 pts
  19. DHCP is implemented in the router.
  20.  
  21. True
  22. Correct!
  23. False
  24.  
  25. Question 4
  26. 0.4 / 0.4 pts
  27. Given a set of inter-connected routers, a routing algorithm finds a "good" path from source router to destination router.
  28.  
  29. Correct!
  30. True
  31. False
  32.  
  33. Question 5
  34. 0.4 / 0.4 pts
  35. The flag of the last fragment of a fragmented datagram is set to 1.
  36.  
  37. True
  38. Correct!
  39. False
  40.  
  41. Question 6
  42. 0.4 / 0.4 pts
  43. A DV routing algorithm requires global knowledge on connectivity and all link costs.
  44.  
  45. True
  46. Correct!
  47. False
  48.  
  49. Question 7
  50. 0.4 / 0.4 pts
  51. OSPF uses BGP for routing among areas.
  52.  
  53. True
  54. Correct!
  55. False
  56.  
  57. Question 8
  58. 0.4 / 0.4 pts
  59. The switching function of a router is normally implemented in hardware.
  60.  
  61. Correct!
  62. True
  63. False
  64.  
  65. Question 9
  66. 0.4 / 0.4 pts
  67. An IPv4 address is 4-byte long.
  68.  
  69. Correct!
  70. True
  71. False
  72.  
  73. Question 10
  74. 0.4 / 0.4 pts
  75. Fragmented datagrams are reassembled at the destination host.
  76.  
  77. Correct!
  78. True
  79. False
  80.  
  81. Question 11
  82. 0.4 / 0.4 pts
  83. OSPF takes the connectivity between all nodes and all link costs as inputs.
  84.  
  85. Correct!
  86. True
  87. False
  88.  
  89. Question 12
  90. 0.4 / 0.4 pts
  91. Routers are Network-Layer devices.
  92.  
  93. Correct!
  94. True
  95. False
  96.  
  97. Question 13
  98. 0.4 / 0.4 pts
  99. Two incoming packets at the router can be forwarded at the same time with a bus switching fabric.
  100.  
  101. True
  102. Correct!
  103. False
  104.  
  105. Question 14
  106. 0 / 0.4 pts
  107. A router runs Transport-Layer protocols.
  108.  
  109. You Answered
  110. True
  111. Correct Answer
  112. False
  113.  
  114. Question 15
  115. 0 / 0.4 pts
  116. Consider an Internet address of the form 129.19.40.0/23. The leftmost 23 bits identify the subnet, and the rightmost 8 bits identify the hosts.
  117.  
  118. You Answered
  119. True
  120. Correct Answer
  121. False
  122.  
  123. Question 16
  124. 0.4 / 0.4 pts
  125. In SDN, a router generates the entries of the flow table by running the routing algorithms at the router.
  126.  
  127. True
  128. Correct!
  129. False
  130.  
  131. Question 17
  132. 0.4 / 0.4 pts
  133. Routing algorithms with global state information are often referred to as DV routing algorithms.
  134.  
  135. True
  136. Correct!
  137. False
  138.  
  139. Question 18
  140. 0.4 / 0.4 pts
  141. A router receives routing protocol messages, which are used to configure its forwarding table.
  142.  
  143. Correct!
  144. True
  145. False
  146.  
  147. Question 19
  148. 0 / 0.4 pts
  149. With destination-based routing, load-balancing can be achieved.
  150.  
  151. You Answered
  152. True
  153. Correct Answer
  154. False
  155.  
  156. Question 20
  157. 0.4 / 0.4 pts
  158. Every autonomous system must use the same intra-autonomous system routing algorithm.
  159.  
  160. True
  161. Correct!
  162. False
  163.  
  164. Question 21
  165. 0.4 / 0.4 pts
  166. Forwarding involves the transmission of a packet among routers.
  167.  
  168. True
  169. Correct!
  170. False
  171.  
  172. Question 22
  173. 0.4 / 0.4 pts
  174. The network portion of an IP address is the same for all the hosts on the same IP network.
  175.  
  176. Correct!
  177. True
  178. False
  179.  
  180. Question 23
  181. 0.4 / 0.4 pts
  182. A host doesn't run Network-Layer protocols.
  183.  
  184. True
  185. Correct!
  186. False
  187.  
  188. Question 24
  189. 0.4 / 0.4 pts
  190. A subnet with 214.97.254.0/30 can address up to 4 hosts.
  191.  
  192. Correct!
  193. True
  194. False
  195.  
  196. Question 25
  197. 0.4 / 0.4 pts
  198. Suppose an organization owns the block of IP addresses of the form 129.17.129.96/27. The organization has 32 IP addresses in the range.
  199.  
  200. Correct!
  201. True
  202. False
  203.  
  204. Question 1
  205. 0.4 / 0.4 pts
  206. Suppose a host has a file consisting of 2 million bytes. The host is going to send this file over a link with an MTU of 1,500 bytes. 1334 datagrams are required.
  207.  
  208. True
  209. False
  210.  
  211. Question 2
  212. 0.4 / 0.4 pts
  213. Suppose an organization owns the block of IP address in the form of x.y.z.0/28. It is possible to address up to 32 hosts.
  214.  
  215. True
  216. False
  217.  
  218. Question 3
  219. 0.4 / 0.4 pts
  220. When determining the size of the queues in a router, we should always consider the link capacity.
  221.  
  222. True
  223. False
  224.  
  225. Question 4
  226. 0.4 / 0.4 pts
  227. When a router is forwarding packets, it is possible that two packets are forwarded to two different output ports at the same time when the switching fabric uses a shared bus.
  228.  
  229. True
  230. False
  231.  
  232. Question 5
  233. 0.4 / 0.4 pts
  234. ICANN is a Network Layer protocol.
  235.  
  236. True
  237. False
  238.  
  239. IncorrectQuestion 6
  240. 0 / 0.4 pts
  241. The lookup function for the forwarding table in a router is performed in the switching fabric.
  242.  
  243. True
  244. False
  245.  
  246. Question 7
  247. 0.4 / 0.4 pts
  248. A gateway router runs only inter-AS routing protocols such as BGP.
  249.  
  250. True
  251. False
  252.  
  253. Question 8
  254. 0.4 / 0.4 pts
  255. A router runs Transport-Layer protocols.
  256.  
  257. True
  258. False
  259.  
  260. Question 9
  261. 0.4 / 0.4 pts
  262. BGP is an Inter-AS routing protocol.
  263.  
  264. True
  265. False
  266.  
  267. Question 10
  268. 0.4 / 0.4 pts
  269. With a datagram network layer, each packet carries the address of the destination host.
  270.  
  271. True
  272. False
  273.  
  274. Question 11
  275. 0.4 / 0.4 pts
  276. A router receives routing protocol messages, which are used to configure its forwarding table.
  277.  
  278. True
  279. False
  280.  
  281. Question 12
  282. 0.4 / 0.4 pts
  283. Routers are Network-Layer devices.
  284.  
  285. True
  286. False
  287.  
  288. IncorrectQuestion 13
  289. 0 / 0.4 pts
  290. The Internet network layer provides both connectionless and host-to-host connection service.
  291.  
  292. True
  293. False
  294.  
  295. IncorrectQuestion 14
  296. 0 / 0.4 pts
  297. Single-homed hosts have one interface and routers typically have two or more interfaces.
  298.  
  299. True
  300. False
  301.  
  302. IncorrectQuestion 15
  303. 0 / 0.4 pts
  304. Forwarding in a router involves "Switching" the packet from an input link to an output link.
  305.  
  306. True
  307. False
  308.  
  309. Question 16
  310. 0.4 / 0.4 pts
  311. Switches are Network-Layer devices.
  312.  
  313. True
  314. False
  315.  
  316. Question 17
  317. 0.4 / 0.4 pts
  318. In SDN, a router generates the entries of the flow table by running the routing algorithms at the router.
  319.  
  320. True
  321. False
  322.  
  323. Question 18
  324. 0.4 / 0.4 pts
  325. A link state routing algorithm computes the least-cost path using only the information provided from the "neighbors".
  326.  
  327. True
  328. False
  329.  
  330. IncorrectQuestion 19
  331. 0 / 0.4 pts
  332. In BGP, an autonomous system is identified by its IP address.
  333.  
  334. True
  335. False
  336.  
  337. Question 20
  338. 0.4 / 0.4 pts
  339. With OSPF, a router periodically broadcasts routing information to all other routers in the AS, not just to its neighboring routers.
  340.  
  341. True
  342. False
  343.  
  344. IncorrectQuestion 21
  345. 0 / 0.4 pts
  346. A NAT-enabled router is hiding the details of the home network from the outside world.
  347.  
  348. True
  349. False
  350.  
  351. IncorrectQuestion 22
  352. 0 / 0.4 pts
  353. A router runs only Network-Layer protocols.
  354.  
  355. True
  356. False
  357.  
  358. Question 23
  359. 0.4 / 0.4 pts
  360. DHCP runs over TCP.
  361.  
  362. True
  363. False
  364.  
  365. IncorrectQuestion 24
  366. 0 / 0.4 pts
  367. The management information base (MIB) is a repository of data maintained at a managing entity site, providing the network manager with a centralized, quick-to-query database regarding current network status.
  368.  
  369. True
  370. False
  371.  
  372. Question 25
  373. 0.4 / 0.4 pts
  374. Oscillations only happens when a congestion-sensitive routing is used.
  375.  
  376. True
  377. False
  378.  
  379. Question 1
  380. 0 / 0.4 pts
  381. ICMP can only be used for error reporting.
  382.  
  383. True
  384. False
  385.  
  386. IncorrectQuestion 2
  387. 0 / 0.4 pts
  388. An IPv6 address is 16-byte long.
  389.  
  390. True
  391. False
  392.  
  393. Question 3
  394. 0.4 / 0.4 pts
  395. In a distance-vector routing algorithm, each node has a map of the entire network and determines the shortest path from itself to all other nodes in the network.
  396.  
  397. True
  398. False
  399.  
  400. Question 4
  401. 0.4 / 0.4 pts
  402. A DV routing algorithm requires global knowledge on connectivity and all link costs.
  403.  
  404. True
  405. False
  406.  
  407. Question 5
  408. 0.4 / 0.4 pts
  409. Suppose the computer in your office has been configured with an IP address, and you move (along with your computer) to an office down the hall. If after the move your computer is connected to the same IP network, then it is not necessary to reconfigure the IP address in your computer.
  410.  
  411. True
  412. False
  413.  
  414. Question 6
  415. 0.4 / 0.4 pts
  416. Oscillations is an issue in DV routing algorithms.
  417.  
  418. True
  419. False
  420.  
  421. Question 7
  422. 0.4 / 0.4 pts
  423. A router runs Transport-Layer protocols.
  424.  
  425. True
  426. False
  427.  
  428. Question 8
  429. 0.4 / 0.4 pts
  430. The checksum field in an IPv6 datagram is used to detect bit errors.
  431.  
  432. True
  433. False
  434.  
  435. Question 9
  436. 0.4 / 0.4 pts
  437. Routers are Network-Layer devices.
  438.  
  439. True
  440. False
  441.  
  442. Question 10
  443. 0.4 / 0.4 pts
  444. A router receives routing protocol messages, which are used to configure its forwarding table.
  445.  
  446. True
  447. False
  448.  
  449. Question 11
  450. 0.4 / 0.4 pts
  451. A IPv4 datagram has a 20-byte header.
  452.  
  453. True
  454. False
  455.  
  456. IncorrectQuestion 12
  457. 0 / 0.4 pts
  458. In SDN, a router generates the entries of the flow table by running the routing algorithms at the router.
  459.  
  460. True
  461. False
  462.  
  463. IncorrectQuestion 13
  464. 0 / 0.4 pts
  465. To identify a device at home through a NAT-enabled router, IP address alone is enough.
  466.  
  467. True
  468. False
  469.  
  470. IncorrectQuestion 14
  471. 0 / 0.4 pts
  472. A packet loss usually happens at the output link of a router.
  473.  
  474. True
  475. False
  476.  
  477. IncorrectQuestion 15
  478. 0 / 0.4 pts
  479. With destination-based routing, load-balancing can be achieved.
  480.  
  481. True
  482. False
  483.  
  484. Question 16
  485. 0.4 / 0.4 pts
  486. The routing protocol used within an AS is called an Inter-AS routing protocol.
  487.  
  488. True
  489. False
  490.  
  491. Question 17
  492. 0.4 / 0.4 pts
  493. Fragmented datagrams are reassembled at the destination host.
  494.  
  495. True
  496. False
  497.  
  498. IncorrectQuestion 18
  499. 0 / 0.4 pts
  500. Forwarding involves the transmission of a packet among routers.
  501.  
  502. True
  503. False
  504.  
  505. Question 19
  506. 0.4 / 0.4 pts
  507. Suppose an organization owns the block of IP addresses of the form 129.17.129.96/27. The organization has 32 IP addresses in the range.
  508.  
  509. True
  510. False
  511.  
  512. Question 20
  513. 0.4 / 0.4 pts
  514. Count-to-infinity problem is an issue in DV routing algorithms.
  515.  
  516. True
  517. False
  518.  
  519. Question 21
  520. 0.4 / 0.4 pts
  521. Packet loss means a packet is dropped at a router because of a buffer overflow.
  522.  
  523. True
  524. False
  525.  
  526. IncorrectQuestion 22
  527. 0 / 0.4 pts
  528. In the BGP routing algorithm, each AS advertises to its neighbors its estimates of the shortest distances from the AS to all possible destination ASs.
  529.  
  530. True
  531. False
  532.  
  533. Question 23
  534. 0.4 / 0.4 pts
  535. OSPF uses BGP for routing among areas.
  536.  
  537. True
  538. False
  539.  
  540. Question 24
  541. 0.4 / 0.4 pts
  542. DHCP runs over TCP.
  543.  
  544. True
  545. False
  546.  
  547. Question 25
  548. 0.4 / 0.4 pts
  549. ATM in the Virtual Circuit Network is a connection-oriented network service model.
  550.  
  551. True
  552. False
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