Free Exam 70-680 Sample Questions

Q. 249. Which of the following modification of data for security purposes prior to transmission so that it is not comprehensible without the decoding method?
A. Dynamic ISL
B. encapsulation
C. connectivity
D. encapsulation
Ans: d
Exp: encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key.

Q. 250. Which of the following Services that involve crossing the backbone to achieve access?
A. encapsulation
B. Enterprise Services
C. subscribers
D. encapsulation
Ans: b
Exp: These services are typically located on a separate subnet than the rest of the network devices.

Q. 251. Which of the following connection used on the Catalyst 3000 family or Kalpana switches?
A. internet
B. intranet
C. internet protocol
D. EtherChannel
Ans: d
Exp: It allows as many as seven Ethernet links to be bundled and load-balanced frame by frame to provide up to 140Mps of bandwidth. It can utilize half-duplex or full-duplex links.

Q. 252. Which of the following connection used on the Catalyst 5000 family of switches?
A. Fast EtherChannel
B. EtherChannel
C. slow EtherChannel
D. normal EtherChannel
Ans: a
Exp: It allows as many as seven Ethernet links to be bundled and load-balanced frame by frame to provide up to 800Mbps of bandwidth. It can utilize half-duplex or full-duplex links.

Q. 253. Which of the following IEEE 802.3 specification for data transfers of up to 100Mbps?
A. Fast Ethernet
B. fault tolerance
C. EtherChannel
D. Fast EtherChannel
Ans: a
Exp: Fast Ethernet is a collective term for a number of Ethernet standards that carry traffic at the nominal rate of 100 Mbit/s, against the original Ethernet speed of 10 Mbit/s.

Q. 254. Which of the following theoretical concept defined as a resistance to failure in computer science?

A. intranet
B. Fast EtherChannel
C. fault tolerance
D. EtherChannel
Ans: c
Exp: fault tolerance is not an absolute and can be defined only in degrees.

Q. 255. Finds information in remote repositories, including SharePoint sites, with a simple user
interface. Choose the right option that satisfies this definition?
A. fault tolerance
B. Maintenance
C. EtherChannel
D. Federated Search
Ans: d
Exp: Federated search is the simultaneous search of multiple online databases or web resources and is an emerging feature of automated, web-based library and information retrievalsystems.

Q. 256. Which of the following physical medium capable of conducting modulated light transmissions?
A. Cable modem
B. Bowden cable
C. Digital cable
D. fiber-optic cable
Ans: d
Exp: fiber-optic cable is more expensive, but is not susceptible to electromagnetic interference and is capable of higher data rates.

Q. 257. Which of the following set of standards or protocols that allows you to transfer complete files between different computer hosts?
A. intranet protocol
B. internet protocol
C. connectivity
D. File Transfer Protocol
Ans: d
Exp: File Transfer Protocol is a standard network protocol used to copy a file from one host to another over a TCP/IP-based network, such as the Internet.

Q. 258. Which of the following security system intended to protect an organization's network against external threats, such as hackers, coming from another network, such as the Internet?

A. firefox
B. firewall
C. search engine
D. intranet
Ans: b
Exp: a combination of hardware and software, a firewall prevents computers in the organization's network from communicating directly with computers external to the network and vice versa.

Q. 259. Which of the following type of memory that keeps its contents (usually the operating system) when the power is cycled?
A. RAM
B. ROM
C. flash memory
D. momory
Ans: c
Exp: Flash memory is a non-volatile computer storage technology that can be electrically erased and reprogrammed.

Q. 260. Which of the following method used to control the amount of data that is transmitted within a given period of time?
A. flow increase
B. flow change
C. data flow
D. flow control
Ans: d
Exp: There are different types of flow control.

Q. 261. Which of the following method grouping of information transmitted as a unit across the network at the data link layer?
A. data flow
B. flow control
C. frame
D. client
Ans: c
Exp: frame is a grouping of information transmitted as a unit across the network at the data link layer.

Q. 262. Which of the following field performs a cyclic redundancy check (CRC) to ensure that all of the frame's data arrives intact?
A. Frame Check Sequence information
B. Frame Check Sequence field
C. Frame Check Sequence variable
D. Frame Check Sequence data
Ans: b
Exp: This field performs a cyclic redundancy check to ensure that all of the frame's data arrives intact.

Q. 263. Which of the following data frame, the field that specifies the length of a frame?
A. Frame Check Sequence field
B. flow control
C. Frame Check Sequence data
D. Frame Length field
Ans: d
Exp: in Frame Length field, the maximum length for an 802.3 frame is 1,518 bytes.

Q. 264. Which of the following data frame, the field that names the protocol that is being sent in the frame?
A. Frame Length field
B. Frame size field
C. Frame shape field
D. Frame Type Field
Ans: d
Exp: the field that names the protocol that is being sent in the frame.

Q. 265. Which of the following backup method in which every file on the hard drive is copied?
A. address
B. full backup
C. backup
D. cookies
Ans: b
Exp: the process of backing up refers to making copies of data so that these additional copies may be used to restore the original after a data lossevent.

Q. 266. Which of the following transmission method in which the sending and receiving (Rx and Tx) channels are separate; therefore, collisions cannot occur?

A. half duplex
B. single duplex
C. normal duplex
D. full duplex
Ans: d
Exp: in full duplex, data is transmitted in two directions simultaneously on separate physical wires.



Q. 267. Which of the following hardware and software solution that enables communication between two dissimilar networking systems or protocols?
A. firewall
B. address
C. client
D. gateway
Ans: d
Exp: Gateways usually operate at the upper layers of the OSI protocol stack, above the transport layer.

Q. 268. Which of the following IEEE specification for transfer rates up to one gigabit per second?
A. Gigabit internet
B. Gigabit intranet
C. Gigabit Ethernet
D. Gigabit Cthernet
Ans: c
Exp: Gigabit Ethernet (GbE or 1 GigE) is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the IEEE 802.3 2008standard.

Q. 269. Which of the following method of flow control in which the sending and receiving hosts agree upon a rate of data transmission?

A. Gigabit Ethernet
B. flow control
C. guaranteed flow control
D. full duplex
Ans: c
Exp: the communication will take place at the guaranteed rate until the sender is finished. No buffering takes place at the receiver.

Q. 270. Which of the following circuit designed for data transmission in both directions, but not simultaneously?
A. half duplex
B. single duplex
C. normal duplex
D. full duplex
Ans: a
Exp: A half-duplex system provides for communication in both directions, but only one direction at a time.

Q. 271. Which of the following situation in which congestion on an outbound port limits throughput to uncongested ports?
A. head-of-line blocking
B. full duplex
C. Frame Check Sequence data
D. Frame Length field
Ans: a
Exp: head-of-line blocking is completely different from oversubscription. Physical data from another
source device blocks the data of the sending device.

Q. 272. Which of the following system on a network and in the Unix world, any device that is assigned an IP address?
A. client
B. host
C. address
D. byte
Ans: b
Exp: In computer networking , a network host, Internet host, host, or Internet node is a computer connected to the Internet

Q. 273. Which of the following unique identifier for a client or resource on a network?
A. host
B. host id
C. host network
D. hosting
Ans: b
Exp: host id is a unique identifier for a client or resource on a network.

Q. 274. Which of the following NetBIOS name of the computer or node, given to the first element of the Internet domain name?
A. hostname
B. host id
C. hosting
D. host
Ans: a
Exp: hostname must be unique on your network.

Q. 275. Which of the following hardware device that connects multiple independent nodes?
A. hub
B. host id
C. host network
D. hostname
Ans: a
Exp: hub is also known as a concentrator or multiport repeater.

Q. 276. Which of the following protocol used by Web browsers to transfer pages and files from the remote node to your computer?
A. Hypertext
B. Hypertext link
C. Hypertext markup language
D. Hypertext Transfer Protocol
Ans: d
Exp: The Hypertext Transfer Protocol is an Application Layer protocol for distributed, collaborative, hypermedia information systems.

Q. 277. Which of the following is the correct abbreviation of IEEE?

A. Institute of Electrical and Electronics Engineers
B. Institute of ethical and Electronics Engineers
C. Institute of Electronics and Electronics Engineers
D. Institute of ethological and Electronics Engineers
Ans: a
Exp: The Institute of Electrical and Electronics Engineers or IEEE (read eye-triple-e) is an international non-profit, professional organization for the advancement of technology related to electricity.

Q. 278. Which of the following standard that defines the OSI model's physical and data link layers?

A. IEEE 802.2
B. IEEE 802.3
C. IEEE 802.4
D. IEEE 802.1
Ans: d


Exp: This standard allows two IEEE LAN stations to communicate over a LAN or wide area network (WAN) and is often referred to as the internetworking standard. It also includes the Spanning Tree
Algorithm specifications.
Q. 279. Standard that defines the LLC sublayer for the entire series of protocols covered by the
_____________________standards.
A. 802.c
B. 802.q
C. 802.x
D. 802.z
Ans: c
Exp: This standard specifies the adding of header fields, which tell the receiving host which upper layer sent the information. It also defines specifications for the implementation of the Logical Link Control (LLC) sublayer of the data link layer.

Q. 280. Which of the following standard that specifies physical-layer attributes--such as signaling types, data rates, and topologies--and the media-access method used?

A. IEEE 802.2
B. IEEE 802.3
C. IEEE 802.4
D. IEEE 802.1
Ans: b
Exp: IEEE 802.3 defines specifications for the implementation of the physical layer and the MAC sublayer of the data link layer, using CSMA/CD. This standard also includes the original specifications for Fast Ethernet.

Q. 281. Which of the following standard that defines how production machines should communicate and establishes a common protocol for use in connecting these machines?

A. IEEE 802.2
B. IEEE 802.3
C. IEEE 802.4
D. IEEE 802.1
Ans: c
Exp: IEEE 802.4 defines specifications for the implementation of the physical layer and the MAC sublayer of the data link layer using Token Ring access over a bus topology.

Q. 282. Which of the following standard often used to define Token Ring and however, it does not specify a particular topology or transmission medium?

A. IEEE 802.5
B. IEEE 802.4
C. IEEE 802.3
D. IEEE 802.2
Ans: a
Exp: IEEE 802.5provides specifications for the implementation of the physical layer and the MAC sublayer of the data link layer using a token-passing media-access method over a ring topology.

Q. 283. Which of the following standard that defines the distributed queue dual bus (DQDB) technology to transfer high-speed data between nodes?
A. IEEE 802.2
B. IEEE 802.4
C. IEEE 802.6
D. IEEE 802.8
Ans: c
Exp: IEEE 802.6 provides specifications for the implementation of metropolitan area networks (MANs).

Q. 284. Which of the following standard that defines the design, installation, and testing of broadband-based communications and related physical media connectivity?
A. IEEE 802.3
B. IEEE 802.5
C. IEEE 802.7
D. IEEE 802.9
Ans: c
Exp: IEEE 802.7 standard that defines the design, installation, and testing of broadband-based communications.

Q. 285. Which of the following standard that defines a group of people who advise the other 802-standard committees on various fiber-optic technologies and standards?

A. IEEE 802.4
B. IEEE 802.8
C. IEEE 802.12
D. IEEE 802.14
Ans: b
Exp: in IEEE 802.8, advisory group is called the Fiber Optic Technical Advisory Group.

Q. 286. Which of the following standard that defines the integration of voice and data transmissions using isochronous Ethernet (IsoEnet)?
A. IEEE 802.3
B. IEEE 802.6
C. IEEE 802.9
D. IEEE 802.12
Ans: c
Exp: IEEE 802.9 standard that defines the integration of voice and data transmissions.

Q. 287. Which of the following Cisco proprietary protocol, used primarily to transport VLAN information over Fiber Distributed Data Interface (FDDI)?
A. IEEE 802.5
B. IEEE 802.10
C. IEEE 802.15
D. IEEE 802.20
Ans: b
Exp: this protocol primarily used in FDDI backbones to transport VLAN information and data.

Q. 288. Which of the following standard that defines the implementation of wireless technologies, such as infrared and spread-spectrum radio?
A. IEEE 802.9
B. IEEE 802.11
C. IEEE 802.13
D. IEEE 802.15
Ans: b
Exp: IEEE 802.11 standard that defines the implementation of wireless technologies

Q. 289. Which of the following standard that defines 100BaseVG/AnyLAN, which uses a 1000Mbps signaling rate and a special media-access method allowing 100Mbps data traffic over voice-grade cable?
A. IEEE 802.10
B. IEEE 802.11
C. IEEE 802.12
D. IEEE 802.13
Ans: c
Exp: IEEE 802.12 Standard that defines 100BaseVG/AnyLAN, which uses a 1000Mbps signaling rate.

Q. 290. Which of the following standard protocol for inserting a frame tag VLAN identifier in the frame header and as a frame enters the switch fabric, it is tagged with additional information regarding the VLAN properties.

A. IEEE 802.10
B. IEEE 802.11
C. IEEE 802.12
D. IEEE 802.13
Ans: d
Exp: The tag remains in the frame as it is forwarded between switches and is removed prior to exiting the access link to the destination interface. This process is completely transparent to the end user.


Q. 291. Which of the following operation in which data either enters a node or is sent out of a node?
A. hexadecimal
B. Binary
C. input/output
D. octal
Ans: c
Exp: I/O operation in which data either enters a node or is sent out of a node

Q. 292. Which of the following professional organization that develops standards for networking and communications?
A. institute of apple
B. institute of Microsoft
C. institute of international business machine
D. Institute of Electrical and Electronics Engineers
Ans: d
Exp: The Institute of Electrical and Electronics Engineers is an international non-profit, professional organization for the advancement of technology related to electricity.

Q. 293. Which of the following device, such as a card or a plug, that connects pieces of hardware with the computer so that information can be moved from place to place?
A. interface
B. application
C. data
D. address
Ans: a
Exp: in interface, between computer and printers, hard disks, and other devices, or between two or more nodes on a network.

Q. 294. Which of the following used for testing with TCP/IP and this address--127.0.0.1?
A. external loopback address
B. internal loopback address
C. half loopback address
D. full loopback address
Ans: b
Exp: it allows a test packet to reflect back into the sending adapter to determine if it is functioning properly.