Networking Midterm

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1.  Routers perform routing at which OSI level?
A.
B.
C.
2.  You need to crimp on a connector using the RJ-45 connector. Which pin-out configuration would you use to connect a host into a switch?
A.
B.
C.
D.
3.  A 64MB data stream is divided into smaller segments for transmission at which layer of the OSI model?
A.
B.
C.
4.  You receive a call from a user that is complaining that they cannon get on the Internet. You have them verify their IP address, mask, and default gateway. The Ip address is 104.0.37.144 with a subnet mask of 255.255.254.0. The default gateway is 104.0.38.1. What's the problem?
A.
B.
C.
D.
5.  This device creates many smaller collision domains, but the network is still one large broadcast domain
A.
B.
C.
D.
6.  Which of the following is a Class C network address?
A.
B.
C.
D.
7.  The _______ layer of the OSI model is responsible for converting data packets from the Data Link layer into electrical signals
8.  How many bits are in a MAC address?
A.
B.
C.
D.
9.  On a network, which mask should you use on a point-to-point WAN links in order to reduce the waste of IP addresses
A.
B.
C.
D.
E.
10.  Write the subnet address for 192.168.100.99/25
11.  When connecting a plug to UTP cable, why should you ensure the outside casing is clamped in the plug? Strain relief or minimizing the length of untwisted wires
A.
B.
12.  Which of the following provides the longest cable run distance?
A.
B.
C.
D.
13.  Is it easier to troubleshoot a star topology that uses a hub than a bus topology using coaxial cable?
A.
B.
14.  What protocol helps devices share the bandwidth evenly without having two devices transmit at the same time on the network medium?
A.
B.
C.
D.
15.  What does VPN stand for?
A.
B.
C.
16.  What is the subnetwork address for a host with the IP address 200.10.5.68/28
A.
B.
C.
D.
17.  TCP and UDP reside at which layer of the OSI model?
A.
B.
C.
D.
18.  What is a logical grouping of network users and resources connected to logically isolated ports on a switch?
A.
B.
C.
19.  Which type of cable will you use to connect switches together?
20.  The _______ layer of the OSI model combines bits into bytes and bytes into frames and uses MAC addresses
21.  Fibre-optic cable is immune to electromagnetic interference (EMI) and radio frequency interference (RFI) because it:
A.
B.
C.
D.
22.  What two statements abotu IPv4 and IPv6 addresses are true? Chose 2
A.
B.
C.
D.
23.  The _______ layer of the OSI model specifies voltage, wire speed, and connector pin-outs, and moves bits between devices
24.  In a class C IP address, how long is a network address?
A.
B.
C.
D.
25.  At which layer of the OSI model do bridges, hubs and routers primarily operate, respectively?
A.
B.
C.
26.  Hardware addresses are defined at this layer:
A.
B.
C.
27.  A host uses the _______ address to decide whether or not to read in a frame from the media (wire) and pass it up. It uses the _____ address to decide if the message is meant for it, and the ______ address to decide which process should get the message.
A.
B.
C.
28.  What device can you NOT use full-duplex communication with?
A.
B.
C.
D.
29.  You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to that router interface?
A.
B.
C.
D.
E.
30.  If you are forced to replace a router that has failed to the point that you are unable to access its current configuration to aid in setting up interface addresses on the new router, which of the folowing can you reference for assistance?
A.
B.
C.
D.
31.  Which device by default does NOT forward any broadcast or multicast packets
A.
B.
C.
D.
32.  Acknowledgment, sequencing and flow control are the characteristics of which OSI layer?
A.
B.
C.
33.  Write the broadcast address for 192.168.100.99/25
34.  The _______ layer in the OSI model manages the transmission of data across a physical link and is primarily concerned with physical or MAC addressing and the integrity of frames
35.  With PAT (Port Address Translation), why does the PAT gateway also replace the TCP/UDP source port number?
36.  An advantage of a star topology using a hub instead of a bus topology is...
A.
B.
C.
D.
37.  If you can ping by IP address but not by hostname or URL, which of the following is related to the problem?
A.
B.
C.
D.
E.
38.  What is the purpose of flow control?
A.
B.
C.
39.  What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
A.
B.
C.
D.
40.  Which of the following is true when describing a unicast address?
A.
B.
C.
D.
41.  The __________ layer of the OSI model is used to ensure that every packet of data from the sender is received and acknowledged by the receiver
42.  How is the decimal value 10 represented in binary?
A.
B.
C.
D.
43.  Which statement regarding private IP addresses is most accurate?
A.
B.
C.
44.  What type of cable does EMI have the least effect on?
A.
B.
C.
D.
45.  At which layer of the OSI model would you find IP?
A.
B.
C.
46.  You want to connect remotely to the office network in a secure manner. Which of the following should you use?
A.
B.
C.
47.  In a switched network, if you need more connections at any point in the network, just add a switch to an existing line.
A.
B.
48.  Which of the following protocols uses both TCP and UDP?
A.
B.
C.
D.
49.  What is the highest usable address on the 127.16.1.0/24 network?
A.
B.
C.
50.  If a host on teh network has the address 172.16.45.14/30. What is the address of the subnet this host belongs to?
A.
B.
C.
D.
E.
51.  Which of the following is a Layer 2 broadcast?
A.
B.
C.
D.
52.  Coax cable can be used when going full duplex to a switch, but only for its full 185M length
A.
B.
53.  What is a benefit of a layer 3 switch over a layer 2 switch?
A.
B.
C.
D.
54.  Say your network is using C5e UTP. If you need to go through a busy factory area, you could run fibre-optic cable, with transceivers at both ends to convert back to RJ 45 and electrical signals
A.
B.
55.  Which of the following can achieve 200Mbps running full duplex on CAT5e cable?
A.
B.
C.
D.
56.  Which of the following describes a broadcast address?
A.
B.
C.
D.
57.  Your host is sending a message with 80 as the destination port address. What service are you trying to access on the destination host?
A.
B.
C.
D.
E.
58.  Which of the following is a valid IP address that can be used on the Internet (meaning the public addressing scheme)?
A.
B.
C.
D.
59.  Which device does not aid in network segmentation?
A.
B.
C.
D.
60.  How many devices in a collision domain have to listen when a single host talk?
A.
B.
C.
D.
61.  Routing is enabled at the ______ layer of the OSI model, enabling connections and path selections between two end systems
62.  What is the purpose of the Frame Check Sequence (FCS) in an Ethernet frame?
A.
B.
C.
D.
63.  What type of cable transmits lights from end to end?
A.
B.
C.
64.  What is the difference between a LAN and a WAN?
A.
B.
C.
D.
65.  This device breaks up collision domains and broadcast domains
A.
B.
C.
66.  What is the valid host range for 192.168.100.99/25
67.  What effect will an inappropriate DHCP server have on hosts using static IP addresses?
68.  How many wire pairs are used in 100Base-T full duplex?
A.
B.
C.
D.
69.  This device can never run full duplex
A.
B.
C.
70.  Which of the following is true when describing a multicast address?
A.
B.
C.
D.
71.  Which is a valid Class B address?
A.
B.
C.
72.  A cross-over cable is used to connect all the following EXCEPT:
A.
B.
C.
D.
73.  You have a class A host of 10.0.0.110/25. It needs to communicate to a host with an IP address of 10.0.0.210/25. Which of the following devices do you need to use in order for these hosts to communicate?
A.
B.
C.
D.
74.  What two statements about IPv6 addresses are true? Choose 2
A.
B.
C.
D.
75.  Which layer of the OSI model provides the interface or entry point for programs to access the network infrastructure?
A.
B.
C.
76.  What advantage does the client/server architecture have over peer-to-peer
A.
B.
C.
D.
77.  When a host gets its IP address and subnet mask, it derrives the default gateway's IP address by determining what is the first valid host address in the same subnet
A.
B.
78.  A network administrator uses a straight-through cable connecting Host A (IP address 192.168.1.20 Mask 255.255.255.240) and Host B (IP address 192.168.1.201 Mask 255.255.240) directly through their Ethernet interfaces. Ping attempts between Host A and Host B are unsuccessful. What 2 things can be done to provide connectivity between the hosts?
A.
B.
C.
D.
E.
79.  What is the main difference between single mode fibre (SMF) and multimode fibre (MMF)
A.
B.
C.
D.
80.  Which of the following mnemonic devices can you use to remember the first letter of the name of each layer of the OSI model in proper order?
A.
B.
C.
81.  Which pairs of wires are using for 10baseT and 100baseT communication? Choose all that apply
A.
B.
C.
D.
E.
F.
G.
82.  What does the Base mean in 100Base-TX?
A.
B.
C.
83.  What is the decimal equivalent of this binary number:11000000.10101000.00110000.11110000
A.
B.
C.
84.  Single-mode fibre-optic cable has better EMI resistance that STP CAT6e
A.
B.
85.  Why would a network administrator use plenum rated cable during installation? Choose 2
A.
B.
C.
D.
86.  Which type of cable should be used to connect to the console port on a router?
A.
B.
C.
87.  Of the following, which is the highest layer in the OSI model?
A.
B.
C.
88.  What is the 127.0.0.1 address used for?
89.  A repeater amplifies a signal to allow it to travel further
A.
B.
90.  You receive a call from a user that is complaining that they cannot get on the Internet. You have them verify their IP address, mask, and default gateway. The IP address is 104.0.37.144 with a subnet mask of 255.255.254.0. The default gateway is 104.0.38.1. What is the problem?
A.
B.
C.
D.
91.  What type of connector does UTP cable typically use?
A.
B.
C.
D.
92.  When grounding an STP cable, don't try to get the foil shield to contact the plug's metal casing. The grounding wire is for that.
A.
B.
93.  Logical addressing is used at this layer:
A.
B.
C.
94.  What is the name for a 48-bit (6 byte) numerical address physically assigned to a network interface, such as a NIC?
95.  Multi-mode fibre-optic cable has poorer EMI resistance than STP CAT6e
A.
B.
96.  This layer supports flow control and sequencing:
A.
B.
C.
97.  Two hubs, connected to a switch:
A.
B.
C.
D.
98.  Which of the following can achieve 200Mbps running full duplex on CAT5e cable?
A.
B.
C.
D.
99.  What gives IPv6 the ability to reference more hosts than IPv4?
100.  What is an advantage of using DHCP in a network environment?
A.
B.
C.
D.
101.  Users arrive at the office after a weekend and the hosts that were shut down over the weekend are restarted but can't access the LAN or the internet. Hosts that were not shut down are working fine. Where can the problem be?
A.
B.
C.
D.
102.  Which of the following are fibre optic connectors? Choose 3
A.
B.
C.
D.
E.
F.
103.  You need a network that provides centralized authentication of users. Which of the following concepts should you use?
A.
B.
C.
104.  On which of the following devices are you most likely to be able to implement NAT?
A.
B.
C.
D.
105.  You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway and DNS addresses. WHich protocol will you use to accomplish this?
A.
B.
C.
D.
106.  What does the IP Properties selection "Optain an IP address Automatically" indicate?
A.
B.
C.
D.
E.
107.  How many wire pairs are needed with half duplex?
A.
B.
C.
D.
108.  Which TWO of the following are private IP addresses? Choose 2 answers
A.
B.
C.
D.
E.
109.  What is the decimal number 10 in hexadecimal
A.
B.
C.
D.
110.  In order for a router to handle a request, it must be sent to the routers MAC address, not its IP address
A.
B.
111.  You are transmitting a file to a server on the Internet and receive a time-out message. What layer could be the cause of this message?
A.
B.
C.
112.  When using a hub, the maximum distance from workstation to server is 100M, if using UTP
A.
B.
113.  The ______ layer in the OSI model is responsible for creating, managing and terminating sessions between applications.
114.  When connecting a hub to a switch, the hub can go full duplex to the switch, but only half duplex to hosts connected to the switch
A.
B.
115.  What is the effective total throughput increase with a full-duplex connection?
A.
B.
C.
D.
116.  You want to connect a host to a switch port. What type of Ethernet cable would you use?
117.  Two advantages of fibre optic cabling include: It is completely immune to EMI and RFI and can transmit up to 40 km (25 miles)Harder to evesdrop or wire-tap
A.
B.
118.  What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
A.
B.
C.
D.
E.
119.  Which of the following allows a server to distinguish among different simultaneous requests from the same host?
A.
B.
C.
D.
120.  UTP cable is rated in the following categories EXCEPT:
A.
B.
C.
D.
121.  Which of the following is an example of a LAN
A.
B.
C.
122.  A ground loop is:
A.
B.
C.
D.
E.
123.  What is the valid range of values that may appear in an IPv4 octet? Give your answer in decimal as well as binary
124.  What does a NAT (or stateful inspection) firewall mainly look at to decide whether to allow a packet in or to block it?
125.  Which of the following is a concern in peer-to-peer networks?
A.
B.
C.
126.  How many valid host addresses are in each subnet of 192.168.100.99/25
127.  This identifies the application the message is for
A.
B.
C.
128.  On what type of network are all computers considered equals and do not share any central authority
A.
B.
C.
129.  The maxium distance of 1000Base-T is?
A.
B.
C.
D.
130.  On an ethernet switched network, what address does one host computer use to communicate with another?
A.
B.
C.
131.  Which of the following is a valid Class A address?
A.
B.
C.
D.
132.  How does a bridge or switch 'learn' where hosts are?remembers sender's MAC address on traffic coming in through each port
A.
B.
133.  You enter the command "ping www.conestogac.on.ca" into a command prompt and get the response "Ping request could not find host rr.conestogac.on.ca.". However, if you ping the server's IP address, you get a reply. What is likely the problem?
A.
B.
C.
D.
E.
134.  This identifies the end host the message is for
A.
B.
C.
135.  A recieving host has consistently failed to receive all the segments that it should acknowledge in an agreed transmission set. What can it do to improve the reliability of the communication sessions?
A.
B.
C.
136.  What protocol is used to find the hardware address of a local device?
A.
B.
C.
D.
137.  The ________ layer of the OSI model provides addressing that routers use for path determination
138.  The ______ layer in the OSI model defines how data is formatted, presented, encoded and converted
139.  What is the decimal value for the binary number 11101000
A.
B.
C.
D.
140.  Which layer of the OSI model is responsible for code and character-set conversion as well as recognizing data formats?
A.
B.
C.
141.  Which of the following addresses is not allowed on the Internet? Choose 2 answers
A.
B.
C.
D.
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