Networking Midterm

141 Questions  I  By Kdrost on March 9, 2011
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1.  What does a NAT (or stateful inspection) firewall mainly look at to decide whether to allow a packet in or to block it?
2.  What does the Base mean in 100Base-TX?
A.
B.
C.
3.  UTP cable is rated in the following categories EXCEPT:
A.
B.
C.
D.
4.  The _______ layer of the OSI model specifies voltage, wire speed, and connector pin-outs, and moves bits between devices
5.  What is a benefit of a layer 3 switch over a layer 2 switch?
A.
B.
C.
D.
6.  What is the 127.0.0.1 address used for?
7.  What is the purpose of flow control?
A.
B.
C.
8.  What is the decimal value for the binary number 11101000
A.
B.
C.
D.
9.  What is the valid host range for 192.168.100.99/25
10.  You want to connect a host to a switch port. What type of Ethernet cable would you use?
11.  Which of the following addresses is not allowed on the Internet? Choose 2 answers
A.
B.
C.
D.
12.  A ground loop is:
A.
B.
C.
D.
E.
13.  Which of the following is true when describing a multicast address?
A.
B.
C.
D.
14.  Which of the following provides the longest cable run distance?
A.
B.
C.
D.
15.  What is the purpose of the Frame Check Sequence (FCS) in an Ethernet frame?
A.
B.
C.
D.
16.  Acknowledgment, sequencing and flow control are the characteristics of which OSI layer?
A.
B.
C.
17.  This layer supports flow control and sequencing:
A.
B.
C.
18.  Write the subnet address for 192.168.100.99/25
19.  What two statements abotu IPv4 and IPv6 addresses are true? Chose 2
A.
B.
C.
D.
20.  What type of cable transmits lights from end to end?
A.
B.
C.
21.  Which of the following is a concern in peer-to-peer networks?
A.
B.
C.
22.  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.
23.  Coax cable can be used when going full duplex to a switch, but only for its full 185M length
A.
B.
24.  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
25.  What is the effective total throughput increase with a full-duplex connection?
A.
B.
C.
D.
26.  Which of the following is an example of a LAN
A.
B.
C.
27.  Of the following, which is the highest layer in the OSI model?
A.
B.
C.
28.  This identifies the application the message is for
A.
B.
C.
29.  What is the name for a 48-bit (6 byte) numerical address physically assigned to a network interface, such as a NIC?
30.  Why would a network administrator use plenum rated cable during installation? Choose 2
A.
B.
C.
D.
31.  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.
32.  Fibre-optic cable is immune to electromagnetic interference (EMI) and radio frequency interference (RFI) because it:
A.
B.
C.
D.
33.  How many bits are in a MAC address?
A.
B.
C.
D.
34.  Write the broadcast address for 192.168.100.99/25
35.  Which of the following protocols uses both TCP and UDP?
A.
B.
C.
D.
36.  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.
37.  What is the highest usable address on the 127.16.1.0/24 network?
A.
B.
C.
38.  Which of the following are fibre optic connectors? Choose 3
A.
B.
C.
D.
E.
F.
39.  Which pairs of wires are using for 10baseT and 100baseT communication? Choose all that apply
A.
B.
C.
D.
E.
F.
G.
40.  What is the valid range of values that may appear in an IPv4 octet? Give your answer in decimal as well as binary
41.  Which type of cable will you use to connect switches together?
42.  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.
43.  What two statements about IPv6 addresses are true? Choose 2
A.
B.
C.
D.
44.  Which statement regarding private IP addresses is most accurate?
A.
B.
C.
45.  The ______ layer in the OSI model defines how data is formatted, presented, encoded and converted
46.  On which of the following devices are you most likely to be able to implement NAT?
A.
B.
C.
D.
47.  The ________ layer of the OSI model provides addressing that routers use for path determination
48.  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.
49.  You need a network that provides centralized authentication of users. Which of the following concepts should you use?
A.
B.
C.
50.  How many valid host addresses are in each subnet of 192.168.100.99/25
51.  Is it easier to troubleshoot a star topology that uses a hub than a bus topology using coaxial cable?
A.
B.
52.  At which layer of the OSI model would you find IP?
A.
B.
C.
53.  What is the decimal number 10 in hexadecimal
A.
B.
C.
D.
54.  Which of the following allows a server to distinguish among different simultaneous requests from the same host?
A.
B.
C.
D.
55.  What does the IP Properties selection "Optain an IP address Automatically" indicate?
A.
B.
C.
D.
E.
56.  What protocol is used to find the hardware address of a local device?
A.
B.
C.
D.
57.  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.
58.  How many wire pairs are needed with half duplex?
A.
B.
C.
D.
59.  What does VPN stand for?
A.
B.
C.
60.  What device can you NOT use full-duplex communication with?
A.
B.
C.
D.
61.  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.
62.  Which layer of the OSI model provides the interface or entry point for programs to access the network infrastructure?
A.
B.
C.
63.  This device can never run full duplex
A.
B.
C.
64.  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.
65.  When using a hub, the maximum distance from workstation to server is 100M, if using UTP
A.
B.
66.  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.
67.  Routing is enabled at the ______ layer of the OSI model, enabling connections and path selections between two end systems
68.  What advantage does the client/server architecture have over peer-to-peer
A.
B.
C.
D.
69.  With PAT (Port Address Translation), why does the PAT gateway also replace the TCP/UDP source port number?
70.  What is the subnetwork address for a host with the IP address 200.10.5.68/28
A.
B.
C.
D.
71.  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.
72.  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
73.  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.
74.  A repeater amplifies a signal to allow it to travel further
A.
B.
75.  This device creates many smaller collision domains, but the network is still one large broadcast domain
A.
B.
C.
D.
76.  Which TWO of the following are private IP addresses? Choose 2 answers
A.
B.
C.
D.
E.
77.  How many devices in a collision domain have to listen when a single host talk?
A.
B.
C.
D.
78.  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.
79.  Which of the following is a Layer 2 broadcast?
A.
B.
C.
D.
80.  Single-mode fibre-optic cable has better EMI resistance that STP CAT6e
A.
B.
81.  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.
82.  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.
83.  A 64MB data stream is divided into smaller segments for transmission at which layer of the OSI model?
A.
B.
C.
84.  Which device does not aid in network segmentation?
A.
B.
C.
D.
85.  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.
86.  Which device by default does NOT forward any broadcast or multicast packets
A.
B.
C.
D.
87.  What is an advantage of using DHCP in a network environment?
A.
B.
C.
D.
88.  Which of the following can achieve 200Mbps running full duplex on CAT5e cable?
A.
B.
C.
D.
89.  Which layer of the OSI model is responsible for code and character-set conversion as well as recognizing data formats?
A.
B.
C.
90.  How does a bridge or switch 'learn' where hosts are?remembers sender's MAC address on traffic coming in through each port
A.
B.
91.  Multi-mode fibre-optic cable has poorer EMI resistance than STP CAT6e
A.
B.
92.  Which is a valid Class B address?
A.
B.
C.
93.  What gives IPv6 the ability to reference more hosts than IPv4?
94.  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.
95.  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.
96.  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.
97.  Routers perform routing at which OSI level?
A.
B.
C.
98.  Which type of cable should be used to connect to the console port on a router?
A.
B.
C.
99.  Which of the following is a valid Class A address?
A.
B.
C.
D.
100.  In order for a router to handle a request, it must be sent to the routers MAC address, not its IP address
A.
B.
101.  How is the decimal value 10 represented in binary?
A.
B.
C.
D.
102.  How many wire pairs are used in 100Base-T full duplex?
A.
B.
C.
D.
103.  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.
104.  What is a logical grouping of network users and resources connected to logically isolated ports on a switch?
A.
B.
C.
105.  Hardware addresses are defined at this layer:
A.
B.
C.
106.  This device breaks up collision domains and broadcast domains
A.
B.
C.
107.  At which layer of the OSI model do bridges, hubs and routers primarily operate, respectively?
A.
B.