Quiz
IS 302 - Business Data Communications Module 5
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Perguntas do quiz (106)
1The second step in the routing process involves _____ .
- Aa. selecting the best-match row
- Bb. comparing the packet's destination IP address to all rows
- Cc. comparing the packet's destination IP address to matching rows
- Dd. selecting an interface
2A mask has _____ bits.
- Aa. 64
- Bb. 8
- Cc. 32
- Dd. 16
3Which has a better system for handling options beyond the main header?
- Aa. IPv6
- Bb. both use the same method
- Cc. neither can handle options
- Dd. IPv4
4In IPv6, the payload length gives the number of octets in the _____ .
- Aa. entire packet minus the main header
- Bb. entire packet minus the main and extension headers
- Cc. entire packet
- Dd. entire packet minus the extension headers
5For cost reasons, you should _____ where you can, _____ where you must.
- Aa. route; route
- Bb. route; switch
- Cc. switch; switch
- Dd. switch; route
6The main benefit of IPv6 over IPv4 is _____ .
- Aa. the ability to have quality-of-service guarantees
- Bb. having two more bits in the IP address
- Cc. having two more bytes in the IP address
- Dd. the ability to support more hosts
7In a network mask, the 1s correspond to the _____ .
- Aa. subnet part
- Bb. host part
- Cc. Internet part
- Dd. network part
8The Internet is organized in a _____ .
- Aa. ring
- Bb. mesh
- Cc. hierarchy
- Dd. none of the above
9In a routing table, a _____ represents a route for a group of IP addresses.
- Aa. schema
- Bb. column
- Cc. metric
- Dd. row
10Ethernet standards are set at the _____ .
- Aa. neither A nor B
- Bb. physical layer
- Cc. both A and B
- Dd. transport layer
11A TCP _____ segment is a request to the other transport process to close a connection.
- Aa. SYN
- Bb. FIN
- Cc. CLS
- Dd. ACK
12There is a row for each host address in a(n) _____ .
- Aa. routing table
- Bb. neither A nor B
- Cc. Ethernet switching table
- Dd. both A and B
13A border router connects different IP _____ .
- Aa. networks
- Bb. neither A nor B
- Cc. subnets
- Dd. both A and B
14Using a header checksum field to check for errors _____ .
- Aa. checks the entire packet to look for errors
- Bb. decreases routing time
- Cc. increases routing time
- Dd. makes the protocol reliable
15The total length of an IPv4 address is _____ bits.
- Aa. 64
- Bb. 8
- Cc. 32
- Dd. 16
16Which is a problem with IPv4 addresses?
- Aa. They are too complex.
- Bb. They are incompatible with wireless devices.
- Cc. Routers find it difficult to handle them.
- Dd. We have run out of them.
17Which of the following services does AWS provide?
- Aa. Storage and Database
- Bb. All the above
- Cc. Compute Services
- Dd. Security, Developer, and Management Tools
18AWS Global Infrastructure can be broken down into 3 elements, what are they?
- Aa. Regions, Availability zones, points of presence which include edge locations
- Bb. Unsecure, semi-secure, secure
- Cc. Internal, external, government
- Dd. all of the above
19What is one way that IaaS can save companies money?
- Aa. allowing for decreased control of security guidelines
- Bb. giving the companies free cloud computing services
- Cc. increased capacity to work remotely
- Dd. decreasing the need for onsite server and switch purchases and upgrades
20Which of these are some of the future trends in IaaS?
- Aa. increased investment
- Bb. hybrid cloud expansions
- Cc. innovations in artificial intelligence
- Dd. all of the above
21In decision cashing, when 20 packets arrive to the same destination IP address, the router will _____ .
- Aa. go through all three steps for each
- Bb. none of the above
- Cc. use the decision it made for the first one
- Dd. send them via different routers to create load balancing along different routes
22In the mask 255.255.255.0, how many 1s are there?
- Aa. 48
- Bb. 16
- Cc. 24
- Dd. 8
23TCP/IP standards are set at the _____ .
- Aa. neither A nor B
- Bb. physical layer
- Cc. transport layer
- Dd. both A and B
24The hop limit field in IPv6 corresponds to the _____ field in IPv4.
- Aa. none of the above
- Bb. header checksum
- Cc. protocol
- Dd. length
25TCP is _____ .
- Aa. connectionless
- Bb. unreliable
- Cc. both A and B
- Dd. neither A nor B
26_____ operates at the internet layer.
- Aa. TCP
- Bb. IP
- Cc. both A and B
- Dd. neither A nor B
27Which of the following is connectionless?
- Aa. TCP
- Bb. IP
- Cc. both A and B
- Dd. neither A nor B
28Which of the following is reliable?
- Aa. TCP
- Bb. IP
- Cc. both A and B
- Dd. neither A nor B
29_____ operates at the transport layer.
- Aa. TCP
- Bb. UDP
- Cc. both A and B
- Dd. neither A nor B
30UDP is _____ .
- Aa. connection-oriented
- Bb. connectionless
- Cc. both A and B
- Dd. neither A nor B
31Which of the following is connectioness?
- Aa. TCP
- Bb. UDP
- Cc. both A and B
- Dd. neither A nor B
32Which of the following is reliable?
- Aa. TCP
- Bb. UDP
- Cc. both A and B
- Dd. neither A nor B
33UDP is reliable.
- AVerdadeiro
- BFalso
34When a router forwards incoming packets closer to their destination hosts, this is _____ .
- Aa. routing
- Bb. switching
- Cc. bridging
- Dd. hopping
35Which of the following is one of the three parts of an IP address?
- Aa. Subnet part
- Bb. Mask
- Cc. both A and B
- Dd. neither A nor B
36The network part of an IP address is _____ bits long.
- Aa. 8
- Bb. 16
- Cc. 32
- Dd. we cannot say
37The total length of an IP address is _____ bits.
- Aa. 8
- Bb. 16
- Cc. 32
- Dd. we cannot say
38In the IPv4 address 1.2.3.4, what is the network part?
- Aa. 1
- Bb. 1.2
- Cc. 1.3
- Dd. we cannot say
39Border router's main job is to connect different subnets in the same network.
- AVerdadeiro
- BFalso
40An internal router only connects different IP _____ .
- Aa. subnets
- Bb. networks
- Cc. both A and B
- Dd. neither A nor B
41When a network mask is applied to any IP address on the network, the result is the IP address' network part followed by zeros.
- AVerdadeiro
- BFalso
42In the mask /14, how many 1s are there?
- Aa. 14
- Bb. 16
- Cc. 24
- Dd. none of the above
43Routers know the difference between network and subnet masks.
- AVerdadeiro
- BFalso
44For a given volume of traffic, which are more expensive?
- Aa. switches
- Bb. routers
- Cc. both of the above are about equally expensive
45Routers usually are connected in a _____ topology.
- Aa. point-to-point
- Bb. mesh
- Cc. hierarchical
- Dd. bus
46A(n) _____ must find the best-matching row in its _____ table by comparing several row matches.
- Aa. Ethernet switch, switching
- Bb. router, routing
- Cc. both A and B
- Dd. neither A nor B
47In a routing table, a row is a route for a single IP address.
- AVerdadeiro
- BFalso
48There is a row for each address in a(n) _____ .
- Aa. router table
- Bb. ethernet switch table
- Cc. both A and B
- Dd. neither A nor B
49For 100,000 addresses, which will have fewer rows?
- Aa. router table
- Bb. Ethernet switch table
- Cc. both will be about the same length
50A row in a routing table has the destination 10.8.0.0 and the mask /24. It is a match for 10.8.6.7.
- AVerdadeiro
- BFalso
51The default row _____ .
- Aa. always has the mask /32
- Bb. will always match the IP address of an incoming packet
- Cc. both A and B
- Dd. neither A nor B
52The default row will never be selected as the best match row.
- AVerdadeiro
- BFalso
53When a packet arrives, the router should look for matches in ALL rows in the routing table.
- AVerdadeiro
- BFalso
54The first step in the routing process involves _____ .
- Aa. selecting the best match row
- Bb. comparing the packet's destination IP address to all rows
- Cc. comparing the packet's destination IP address to matching rows
- Dd. selecting an interface
55Deciding how to send the packet back out is Step _____ in the routing process.
- Aa. 1
- Bb. 2
- Cc. 3
- Dd. 4
56Routers send packets out _____ .
- Aa. ports
- Bb. connections
- Cc. interfaces
- Dd. plugs
57The next-hop router in the default row is called the default router.
- AVerdadeiro
- BFalso
58The router selects a row in which the next-hop router is labeled local. The router will send the packet to the _____ .
- Aa. default router
- Bb. local next-hop router
- Cc. destination host
- Dd. none of the above
59Compared to normal routing, decision caching is _____ .
- Aa. faster
- Bb. less dangerous
- Cc. both A and B
- Dd. neither A nor B
60A router must use the ARP process _____ .
- Aa. when a new router comes online
- Bb. when a router goes offline
- Cc. whenever it forwards an IP packet
- Dd. whenever it forwards an IP packet to a host that is not in its ARP cache
61ARP is used to find the destination data link layer destination address of _____ .
- Aa. destination host
- Bb. routers
- Cc. both A and B
- Dd. neither A nor B
62What does a router do with ARP request messages?
- Aa. it broadcasts them
- Bb. it sends them directly to the destination host
- Cc. both A and B
- Dd. neither A nor B
63A router has to go through the ARP process each time it needs to send a packet to a destination host or to a next-hop router.
- AVerdadeiro
- BFalso
64The main version of Internet Protocol in use today is IP version _____ .
- Aa. 1
- Bb. 4
- Cc. 5
- Dd. 6
65A router will discard a packet if the TTL value reaches _____ .
- Aa. 0
- Bb. 1
- Cc. 128
- Dd. 256
66In an IPv4 packet, the _____ field value tells the type of message contained in the IP packet's data field.
- Aa. data
- Bb. next-hop
- Cc. next-header
- Dd. protocol
67An IPv4 packet's protocol field value is 1. The data field contains a(n) _____ message.
- Aa. TCP
- Bb. UDP
- Cc. ICMP
- Dd. DNS
68In packet fragmentation and reassembly, the _____ field is used.
- Aa. version
- Bb. identification
- Cc. protocol
- Dd. diff-serv
69Fragmentation is _____ .
- Aa. very common
- Bb. suspicious because it is often used by hackers
- Cc. both A and B
- Dd. neither A nor B
70The use of options in IP is _____ .
- Aa. very common
- Bb. suspicious because they are often used by hackers
- Cc. both A and B
- Dd. neither A nor B
71Which of the following is contributing to the exhaustion of IPv4 addresses?
- Aa. the growing number of hosts in Asia
- Bb. the growing number of mobile devices
- Cc. both A and B
- Dd. neither A nor B
72The main benefit of IPv6 over IPv4 is _____ .
- Aa. two more bits in the IP address
- Bb. two more bytes in the IP address
- Cc. the ability to have quality-of-service guarantees
- Dd. the ability to support more possible hosts
73Converting networks to support IPv6 is relatively simple and inexpensive.
- AVerdadeiro
- BFalso
74For human reading, in IPv6 addresses, letters should be written in _____ .
- Aa. uppercase
- Bb. lowercase
- Cc. both A and B
- Dd. neither A nor B
75For human reading, IPv6 addresses are written in _____ .
- Aa. decimal
- Bb. hexadecimal
- Cc. binary
- Dd. Elvish
76For human reading, symbols in IPv6 addresses are written in groups of _____ .
- Aa. 1
- Bb. 2
- Cc. 4
- Dd. 16
77If I simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, I get _____ .
- Aa. 2001:0000:0000:00fe::::cdef
- Bb. 2001:::00fe:0000:0000:0000:cdef
- Cc. 2001::00fe::::cdef
- Dd. 2001:::00fe::cdef
78The version number field in IPv6 has the value _____ .
- Aa. 0001
- Bb. 0100
- Cc. 0101
- Dd. none of the above
79If the sending host does not do MTU discovery, the largest packet it can send is _____ .
- Aa. 1,280 octets
- Bb. 65,536 octets
- Cc. 65,536 octets minus the 40 octets of the main headers
- Dd. none of the above. the sending host must do MTU discovery
80Which of the following permits fragmentation by routers along a packet's route?
- Aa. IPv4
- Bb IPv6
- Cc. both A and B
- Dd. neither A nor B
81The time to live field in IPv4 has the same basic function as the hop limit field in IPv6.
- AVerdadeiro
- BFalso
82Which of the following allows routers to check for errors in the header when a packet arrives?
- Aa. IPv4
- Bb. IPv6
- Cc. both A and B
- Dd. neither A nor B
83The encapsulating security protocol offers _____ .
- Aa. confidentiality
- Bb. authentication
- Cc. both A and B
- Dd. neither A nor B
84The encapsulating security protocol can be used in _____ .
- Aa. IPv4
- Bb. IPv6
- Cc. both A and B
- Dd. neither A nor B
85In IPv6, routers, usually only have to consider the hop-by-hop options extension header.
- AVerdadeiro
- BFalso
86To handle internetwork transmission control tasks that the IP protocol cannot handle, the IETF created TCP.
- AVerdadeiro
- BFalso
87TCP messages are called ____ .
- Aa. frames
- Bb. packets
- Cc. segments
- Dd. fragments
88One-bi fields are called _____ fields.
- Aa. binary
- Bb. flag
- Cc. ACK
- Dd. none of the above
89If someone says that a 1-bit flag is set, this means that it is given the value _____ .
- Aa. 0
- Bb. 1
- Cc. either of the above
90If the ACK bit is set, the acknowledgment number field must have a value.
- AVerdadeiro
- BFalso
91Four-way closes use _____ segments.
- Aa. FIN
- Bb. RST
- Cc. both A and B
- Dd. neither A nor B
92Which of the following segments is not acknowledged?
- Aa. FIN
- Bb. RST
- Cc. both of the above are acknowledged
- Dd. neither A nor B is acknowledged
93Which of the following can handle an application message that is one megabyte in size?
- Aa. TCP
- Bb. UDP
- Cc. both A and B
- Dd. neither A nor B
94Dynamic _____ protocols allow routers to transmit routing table information to one another.
- Aa. routing
- Bb. transport
- Cc. synchronization
- Dd. none of the above
95In TCP/IP, routing means _____ .
- Aa. the process that routers use to forward incoming packets
- Bb. the process that routers use to exchange routing table information
- Cc. both A and B
- Dd. neither A nor B
96An autonomous system is free to select whatever _____ dynamic routing protocol it wishes.
- Aa. interior
- Bb. exterior
- Cc. both A and B
- Dd. neither A nor B
97_____ is an interior dynamic routing protocol.
- Aa. RIP
- Bb. BGP
- Cc. both A and B
- Dd. neither A nor B
98Which TCP/IP interior dynamic routing protocol is good for small internets if security is not a serious concern?
- Aa. RIP
- Bb. BGP
- Cc. OSPF
- Dd. both A and C
99Which interior dynamic routing protocol is good for large internets?
- Aa. RIP
- Bb. BGP
- Cc. OSPF
- Dd. both A and C
100Which of the following can route non-IP packets?
- Aa. OSPF
- Bb. EIGRP
- Cc. both A and B
- Dd. neither A nor B
101An autonomous system can freely select the exterior dynamic routing protocol it will use.
- AVerdadeiro
- BFalso
102_____ is used for supervisory messages at the internet layer.
- Aa. TCP
- Bb. DNS
- Cc. DHCP
- Dd. ICMP
103ICMP error advisement messages add reliability to IP.
- AVerdadeiro
- BFalso
104IP is made reliable through _____ .
- Aa. echo and echo reply messages
- Bb. error advisement messages
- Cc. both A and B
- Dd. neither A nor B
105To see if a target host can be reached, you normally would send it at ICMP _____ message.
- Aa. echo
- Bb. error advisement
- Cc. both A and B
- Dd. neither A nor B
106Pinging send ICMP _____ messages to the target host.
- Aa. echo
- Bb. error advisement
- Cc. both A and B
- Dd. neither A nor B
Informações
- Descrição
- Chapter 8
- Autor
- Jamey Cendana
- Idioma
- English
- Visualizações
- 2
- Etiquetas
- Avaliação
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